NAMCATS 137 AMEL Proposed Gaz 2958

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N$16.00 WINDHOEK - 16 April 2003 No.2958

GOVERNMENT GAZETTE

OF THE

REPUBLIC OF NAMIBIA

CONTENTS

Page

GENERAL NOTICE

No. 73 Proposed Civil Aviation Technical Standards: NAM-CATS-AMEL “Aircraft

Maintenance Engineer Licensing” ................................................................................. 1

_________________

MINISTRY OF WORKS, TRANSPORT AND COMMUNICATION

No. 73 2003

PROPOSED CIVIL AVIATION TECHNICAL STANDARDS

NAM-CATS-AMEL 137 “AIRCRAFT MAINTENANCE ENGINEER LICENSING”

The Ministry of Works, Transport and Communication recently initiated the project to

update the current Namibian aviation legislation. There are two main reasons for updating

the aviation legislation, namely, the current legislation does not adequately reflect the

policies of Namibia for the aviation sector and does not reflect recent developments

within SADC. The project further aims to enhance the safety of civil aviation by ensuring

that the Namibian legislation complies with the minimum standards prescribed by the

International Civil Aviation Organization.

In this regard the legislative reform process involves the updating of the regulations

made under the Aviation Act (Act No. 74 of 1962). It also involves the issuing Technical

Standards by the Director of Civil Aviation.

The Technical Standard proposed in this General Notice is one of thirty four (34) technical

standards associated with the Namibian Civil Aviation Regulations, 2001.

Pursuant to the provisions of regulation 11.03.2 the Director: Civil Aviation hereby invites

all interested parties to comment on the proposed NAM-CATS-AMEL “Aircraft

maintenance engineer licensing”.

General Notice

2Government Gazette 16 April 2003 No. 2958

Comments or representations should be lodged in writing and should reach the Ministry

no later than 30 days from the date of publication of this notice. Correspondence should

be addressed to:

Mr. L. Makanza

No. 4 Rudolph Hertzog Street

Windhoek, Namibia

Tel: (061) 245590

Fax: (061) 248641

No. 2958 3

Government Gazette 16 April 2003

REPUBLIC OF NAMIBIA

CIVIL AVIATION

DOCUMENT NAM-CATS-AMEL

(AIRCRAFT MAINTENANCE ENGINEER LICENSING)

4Government Gazette 16 April 2003 No. 2958

NAMIBIAN CIVIL AVIATION TECHNICAL STANDARDS RELATING TO

AIRCRAFT MAINTENANCE ENGINEER LICENSING

1. GENERAL

Section 22A of the Aviation Act, 1962 (as amended by section 5 of the Aviation

Amendment Act, 1998) empowers the Director: Civil Aviation to issue technical standards

for civil aviation on the matters which are prescribed by regulation.

The Director: Civil Aviation has pursuant to the empowerment mentioned above, on

1 September 2003 issued technical standards relating to aircraft maintenance engineer

licensing to be known as Document NAM-CATS-AMEL.

2. PURPOSE

Document NAM-CATS-AMEL contains the standards, rules, requirements, methods,

specifications, characteristics and procedures which are applicable in respect of aircraft

maintenance engineer licensing.

Each reference to a technical standard in this document, is a reference to the corresponding

regulation in the Civil Aviation Regulations, 2001, for example, technical standard 66.02.2

refers to regulation 2 of Subpart 2 of Part 66 of the Regulations.

The abbreviation “CAR” is used throughout this document when referring to a regulation.

The abbreviation “TS” refers to any technical standard.

3. SCHEDULES AND NOTES

Guidelines and recommendations in support of any particular technical standard, are

contained in schedules to, and/or notes inserted throughout the technical standards.

LIST OF TECHNICAL STANDARDS

66.01.9 VALIDATION OF LICENCE ISSUED BY APPROPRIATE

AUTHORITY

1. Form of application

2. Requirements and conditions

3. Form of validation

4. Renewal of validation

5. Requirements and conditions

66.01.11 DESIGNATION OF EXAMINERS

1. Conditions, rules, requirements, procedures or standards for

designation of examiners

66.02.2 TRAINING

1. Core syllabus for the trade : AIRCRAFT ENGINE AND AIRFRAME

TECHNICIAN

2. Core syllabus for the trade : AIRCRAFT STRUCTURES WORKER

3. Core syllabus for the trade : AIRCRAFT INSTRUMENT

TECHNICIAN

4. Core syllabus for the trade : AIRCRAFT AVIONICS

5. Core syllabus for the trade : AIRCRAFT ELECTRICIAN

66.02.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Entry requirements and procedures for theoretical knowledge

examinations

2. Knowledge requirements

3. Retesting after failure

No. 2958 5

Government Gazette 16 April 2003

66.02.4 EXPERIENCE

1. Category A (aeroplanes) : Issue or addition of Category A

2. Category A (aeroplanes) : Extension of Category A

3. Category B : Issue or addition of Category B

4. Category B : Extension of Category B

5. Category C (engines) : Issue or addition of Category C

6. Category C (engines) : Extension of Category C

7. Category D (engines) : Issue or addition of Category D

8. Category D (engines) : Extension of Category D

9. Categories A and C (rotorcraft, including engines) : Issue or addition

of Categories A and C

10. Categories A and C (rotorcraft, including engines) : Extension of

Categories A and C

11. Category X (automatic pilots) : Issue or addition of Category X

(automatic pilots)

12. Category X (automatic pilots) : Extension of Category X (automatic

pilots)

13. Category X (compasses) : Issue or addition of Category X (compasses)

14. Category X (compasses) : Extension of Category X (compasses)

15. Category X (electrical equipment) : Issue or addition of Category X

(electrical equipment)

16. Category X (ignition equipment) : Issue or addition of Category X

(ignition equipment)

17. Category X (instruments) : Issue, addition or extension of Category

X (instruments)

18. Category X (variable-pitch propellers) : Issue or addition of Category

X (variable-pitch propellers)

19. Category X (avionic equipment) : Issue or addition of Category X

(avionic equipment)

20. Category X (avionic equipment) : Extension of Category X (avionic

equipment)

21. Category X (aircraft welding) : Issue or addition of Category X

(aircraft welding)

22. Category X (aircraft welding) : Extension of Category X (aircraft

welding)

23. Category W : Issue or addition of Category W

24. Category W : Extension of Category W

66.02.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

66.02.6 ISSUING OF LICENCE

1. Form of licence

66.02.9 RENEWAL OF LICENCE

1. Form of application

2. Form of renewal

66.02.10 REISSUE

1. Form of application

66.03.2 TRAINING (CATEGORY C)

1. Training standards

66.03.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

2. Retesting after failure

66.03.4 EXPERIENCE

1. Requirements

6Government Gazette 16 April 2003 No. 2958

66.03.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

66.03.6 ISSUING OF LICENCE

1. Form of licence

66.03.9 RENEWAL OF LICENCE

1. Form of application

2. Form of renewal

66.03.10 REISSUE

1. Form of application

66.04.2 TRAINING (CATEGORY W)

1. Training standards

66.04.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

2. Retesting after failure

66.04.4 EXPERIENCE

1. Requirements

66.04.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

66.04.6 ISSUING OF LICENCE

1. Form of licence

66.04.9 RENEWAL OF LICENCE

1. Form of application

2. Form of renewal

66.04.10 REISSUE

1. Form of application

66.05.2 TRAINING (CATEGORY B)

1. Training standards

66.05.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

2. Retesting after failure

66.05.4 EXPERIENCE

1. Requirements

66.05.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

66.05.6 ISSUING OF LICENCE

1. Form of licence

66.05.9 RENEWAL OF LICENCE

1. Form of application

2. Form of renewal

66.05.10 REISSUE

1. Form of application

66.06.2 TRAINING (CATEGORY D)

1. Training standards

No. 2958 7

Government Gazette 16 April 2003

66.06.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

2. Retesting after failure

66.06.4 EXPERIENCE

1. Requirements

66.06.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

66.06.6 ISSUING OF LICENCE

1. Form of licence

66.06.9 RENEWAL OF LICENCE

1. Form of application

2. Form of renewal

66.06.10 REISSUE

1. Form of application

66.07.2 TRAINING (CATEGORY X)

1. Training standards

66.07.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

2. Retesting after failure

66.07.4 EXPERIENCE

1. Requirements

66.07.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

66.07.6 ISSUING OF LICENCE

1. Form of licence

66.07.9 RENEWAL OF LICENCE

1. Form of application

2. Form of renewal

66.07.10 REISSUE

1. Form of application

66.08.2 TRAINING (AME INSTRUCTOR GRADE ONE)

1. Training standards

66.08.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

2. Retesting after failure

66.08.4 EXPERIENCE

1. Requirements

66.08.5 APPLICATION FOR GRADE ONE AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

66.08.6 ISSUING OF GRADE ONE AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of rating

8Government Gazette 16 April 2003 No. 2958

66.08.9 RENEWAL OF GRADE ONE AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

2. Form of renewal

66.09.2 TRAINING (AME INSTRUCTOR GRADE TWO)

1. Training standards

66.09.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

2. Retesting after failure

66.09.4 EXPERIENCE

1. Requirements

66.09.5 APPLICATION FOR GRADE TWO AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

66.09.6 ISSUING OF GRADE TWO AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of rating

66.09.9 RENEWAL OF GRADE TWO AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

2. Form of renewal

SCHEDULE 1: WELDING REQUIREMENTS

ANNEXURE A: APPLICATION FOR THE VALIDATION OF A FOREIGN

AIRCRAFT MAINTENANCE ENGINEER LICENCE

ANNEXURE B: VALIDATION OF A FOREIGN AIRCRAFT MAINTENANCE

ENGINEER LICENCE

ANNEXURE C: APPLICATION FOR AN AIRCRAFT MAINTENANCE

ENGINEER LICENCE

APPLICATION FOR THE AMENDMENT OF AN AIRCRAFT

MAINTENANCE ENGINEER LICENCE

APPLICATION FOR THE RENEWAL OF AN AIRCRAFT

MAINTENANCE ENGINEER LICENCE

APPLICATION FOR THE REISSUING OF AN AIRCRAFT

MAINTENANCE ENGINEER LICENCE

ANNEXURE D: AIRCRAFT MAINTENANCE ENGINEER LICENCE

RENEWAL OF AIRCRAFT MAINTENANCE ENGINEER

LICENCE

ANNEXURE E: APPLICATION FOR AN AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

APPLICATION FOR THE RENEWAL OF AN AIRCRAFT

MAINTENANCE INSTRUCTOR RATING

ANNEXURE F: AIRCRAFT MAINTENANCE INSTRUCTOR RATING

RENEWAL OF AIRCRAFT MAINTENANCE INSTRUCTOR

RATING

No. 2958 9

Government Gazette 16 April 2003

66.01.9 VALIDATION OF LICENCE ISSUED BY APPROPRIATE AUTHORITY

1. Form of application

The form referred to in CAR 66.01.9(1), on which application is made for the validation

of a licence issued by an appropriate authority, is contained in Annexure A.

2. Requirements and conditions

The requirements and conditions referred to in CAR 66.01.9(3), are the following:

(Reserved.)

3. Form of validation

The form referred to in CAR 66.01.9 (4) (a), in which a licence is validated, is

contained in Annexure B.

4. Renewal of validation

The circumstances and conditions referred to in CAR 66.01.9(5), for the renewal

of a validation, are the following:

(Reserved.)

5. Requirement and conditions

The requirements and conditions referred to in CAR 66.01.9(6), are the following:

(Reserved.)

66.01.11 DESIGNATION OF EXAMINERS

1. Conditions, rules, requirements, procedures or standards for designation of

examiners

(Reserved.)

66.02.2 TRAINING

1. Core syllabus for the trade : AIRCRAFT ENGINE AND AIRFRAME

TECHNICIAN

1.1 Introduction

(1) Organisational administration and policy

(2) Aviation Act, 1962

(3) NAMCARS and NAMCATS

(4) Conditions of apprenticeship

1.2 Safety

(1) Occupational Health and Safety

(2) Approved first aid course

(3) Fire fighting - approved

(4) Incident reporting

1.3 Engineering practices

(1) Identify, care and use of handtools

(2) Use of torque wrenches and deadweight testing (Acro Torque)

(3) Standard torques and charts

(4) Ferrous and non-ferrous metals

(5) Heat treatment of materials (hardening, case hardening, tempering,

normalising, hardness test)

(6) Identification and control of corrosion

(7) Read engineering drawings and perform layout

(8) Read and use measuring instruments (verniers, micrometers, vernier

height gauges, dial test indicators and combination sets)

(9) Use of callipers and dividers

10 Government Gazette 16 April 2003 No. 2958

(10) Use of precision gauges (cylinder bore-, radius- hole-, telescopic-, drill

point, snap-, ring-, slip-, sine- and weighting scale)

(11) Read and use of steel rule and tape

(12) Care and use of hand files

(13) Care and use of hacksaws

(14) Care and use of bandsaws

(15) Identification and safe use of a pedestal drill

(16) Identification and safe use of a bench grinder

(17) Replace and dress a grinding wheel

(18) Grinding of drill bits, punches and chisels

(19) Drilling, tapping and reaming of holes

(20) External and internal threading

(21) Identification of screw treads

(22) Repair of heli-coils

(23) Stud removal

(24) Manufacturing of projects

1.4 Standard practices

(1) Selection of use of information-, procedures-, overhaul-, maintenance-,

Illustrated Parts Catalogue manuals and Civil Aviation Regulations, 2001

(2) Aircraft hardware and locking procedures

(3) Jacking and levelling of aircraft

(4) Determine the mass of an aircraft

(5) Marshalling signals

(6) Aircraft towing

(7) Aircraft refuelling

(8) Aircraft labels

(9) Aircraft fluids (contamination, fuels, hydraulic fluids, oils, greases and

inhibiting)

(10) Cleaning solvents and compounds

(11) Perform liquid penetrant and fluorescent dye inspection

(12) Identify solid and flexible tubing

(13) Flaring, bending and cutting of solid tubing

(14) Solid and flexible end fittings

(15) Testing of tubings

(16) Maintenance of plain-, shell-, ball-, roller- and taper bearings

(17) Common bearing faults

1.4.1 Piston engines

(1) Identify different types of engines

(2) Principles of operation

(3) Identify major sections

(4) Disassemble and assemble engines

(5) Change components

(6) Cleaning methods

(7) Perform visual and dimensional inspections (cylinder, piston accessories,

nips, crankshaft, reduction gear assembly, alignment checks and final

inspections)

(8) Magneto timing

(9) Grinding of valves and valve seats

(10) Sparkplug cleaning

(11) Blowby check

(12) Engine overhaul

(13) Engine inhibiting

(14) Engine testing

1.4.2 Propellers

(1) Construction, description and operation

(2) Replacement

(3) Propeller overhaul

1.4.3 Gas turbines

(1) Identify different types and major sections

(2) Construction, description and operation

No. 2958 11

Government Gazette 16 April 2003

(3) Lubrication system

(4) Overhaul procedures (visual, dimensional and cleaning)

(5) Change components

(6) Remove, inspect and replace compressor and turbine blades

(7) Measure creep

(8) Strip and assemble accessory gearbox

(9) Engine testing and inhibiting

1.4.4 Hydraulics

(1) Identify components

(2) Hydraulic operation principles

(3) Construct a basic system

(4) Service a system

(5) Overhaul components

(6) Change components

(7) Operate systems

1.4.5 Flight controls

(1) Mechanics of flight (low and high speed)

(2) Terms and definitions

(3) Axis of an aircraft

(4) Flight controls (low and high speed)

(5) Basic components

(6) Terms and definitions

(7) Major stresses

(8) Major components

(9) Wing forms and components

(10) Fuselage types and components

(11) Control rigging

(12) Primary and secondary systems

(13) Types of tensionmeters

(14) Temperature and tension charts

(15) Set cable tension

(16) Identify inclinometers

(17) Set surface travel

(18) Carry-out rigging checks

1.4.6 Safety equipment

(1) Not core. As required by organisation.

1.4.7 Engine servicing

(1) Not core. As required by organisation.

(2) Landing gear

(3) Landing gear systems

(4) Service a wheel assembly

(5) Service an oleo leg

(6) Service a brake assembly

(7) Service a brake system

(8) Do an operational check

(9) Set wheel alignment

(10) Principles of operation of an aircraft’s secondary systems

(11) Pneumatic system

(12) Identify components

(13) Maintain components

1.4.8 Inspections

(1) Inspection techniques

(2) Pre-flight inspections

(3) Between flight inspections

(4) After flight inspections

(5) Weekly inspections

(6) Flight control system inspection

12 Government Gazette 16 April 2003 No. 2958

1.4.9 Rotorcraft

(1) Rotorcraft theory

(2) Major transmission components

(3) Replace components

(4) Strip and assemble main rotor head

(5) Strip and assemble tail rotor head

(6) Strip and assemble tail and main rotor gear box

(7) Strip and assemble incline shaft, brake, clutch unit, free wheel unit

(8) Rotorcraft mass and balance

(9) Notar theory

(10) Notar blade inspection

(11) Rotor blade maintenance

1.4.10 Structures and plastics

(1) Install aircraft rivets

(2) Mark-off projects

(3) Cut out projects

(4) Drill materials

(5) Bend materials

(6) Assemble materials

(7) Inspection of fabric covered materials

(8) Repair of fabric covered materials

1.4.11 Batteries

(1) Service a battery

1.4.12 Avionic mechanical

(1) Electron theory

(2) Properties of conductors and insulators

(3) Theory of electric charges

(4) Current flow and potential difference

(5) Methods of generating electricity

(6) Fundamentals of magnetism

(7) Operation of an electromagnet

(8) Measure volts, amperes and resistance

(9) Ampmeter and voltmeter range conversions

(10) Ampmeters and voltmeters connected in circuits

(11) Factors controlling resistance

(12) Resistance value and power rating

(13) Identify components in a simple circuit

(14) Calculate resistance of a series resistive network

(15) Calculate resistance of a parallel resistive network

(16) Kirchhoff’s voltage and current laws

(17) Construct series and parallel circuits

(18) Theory of alternating current

(19) Various alternating current meters

(20) Ohm’s law to determine amps, volts, resistance and power consumed in

a pure resistive alternating current circuit

(21) Characteristics of inductance in alternating and direct current circuits

(22) Calculate inductances in series and parallel, inductive time constant and

inductive circuits

(23) Apparent power and true power in an alternating current circuit

(24) Theory of capacitance

(25) Construction of different capacitors

(26) Characteristics of capacitance in direct and alternating currents

(27) Calculate capacitive time constant and reactance

(28) Theory and operation of a step up, step down and auto transformers

(29) Design and construct a step up and step down transformer

(30) Identify and select aircraft instrumentation

(31) Navigation radio communication principles

(32) Techniques of soldering practices

1.4.13 Experience

(1) 80% of core and 20% of organisation requirements

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1.4.14 Revision

(1) Trade syllabus review.

2. Core syllabus for the trade : AIRCRAFT STRUCTURES WORKER

2.1 Introduction

(1) Organisational administration and policy

(2) Aviation Act, 1962

(3) NAMCARS and NAMCATS

(4) Conditions of apprenticeship

2.2 Safety

(1) Occupational Health and Safety

(2) Approved first aid course

(3) Fire fighting - approved

(4) Incident reporting

2.3 Engineering practices

(1) Apply sealants

(2) Bend and roll material (bending allowances)

(3) Correct use of pneumatic hand drills

(4) Countersinking of holes

(5) Deburr of holes

(6) Identification, care and use of handtools

(7) Identification, safe use of bench grinders, pedestal drill (replace and dress

of grinding wheels)

(8) Identify sealants and joints

(9) Identify corrosion and treatments

(10) Install temporary fasteners

(11) Identification of rivets and defects (countersink and universal)

(12) Installation of various types of fasteners

(13) Identify profiles, abbreviations, extrusions, joints and radii

(14) Identify various aircraft materials

(15) Interpretation of manufacturers manuals

(16) Installation of universal and countersink rivets and obtaining the correct

bucktails

(17) Manufacturing of various projects

(18) Manufacturing and repairing of various aircraft components (stress skin

repairs etc)

(19) Manufacturing and repairing aircraft flex and solid tubing

(20) Oxygen acetylene gas welding - heat treatment

(21) Polishing of aircraft materials

(22) Protective coatings

(23) Read and use of measuring instruments (verniers, micrometers, rulers (metric

and imperial) height gauges)

(24) Removing of rivets and fasteners

(25) Reaming of holes for various fasteners

(26) Read and identify more complexed aircraft drawings

(27) Stretch, crimp and form aircraft materials

(28) Safety precautions and use of guillotine

(29) Workout of bending allowances

2.3.1 Experience

(1) 80% of core and 20% of organisation requirements.

2.3.2 Revision

(1) Trade syllabus review.

3. Core syllabus for the trade : AIRCRAFT INSTRUMENT TECHNICIAN

3.1 Introduction

(1) Organisational administration and policy

(2) Aviation Act, 1962

(3) NAMCARS and NAMCATS

(4) Conditions of apprenticeship

14 Government Gazette 16 April 2003 No. 2958

3.2 Safety

(1) Occupational Health and Safety Act

(2) Approved first aid course

(3) Fire fighting - approved

(4) Incident reporting

3.3 Engineering practices

3.3.1 Soldering

(1) Soldering and soldering process

(2) Soldering to turret terminals

(3) Soldering to cup terminals

(4) Soldering to bifurcated terminals

(5) Soldering hook, pierced and lug terminals

(6) Axial lead components

(7) Soldering IC

(8) TO-5 type IC package and other multi lead devices

3.3.2 Electricity

(1) AC/DC voltage with AVO meter

(2) AC/DC current with AVO meter

(3) Resistance with AVO meter

(4) AC/DC voltages with digital multimeter

(5) AC/DC current with digital multimeter

(6) Resistance with digital multimeter

(7) Values and tolerances of resistors

(8) Values and tolerances of potentiometers

(9) Resistance of series/parallel combination of resistors

(10) Kirchhoff’s voltage and current laws

(11) OHM’s law determine current, voltage and resistance in basic circuit

(12) Power in DC load and maximum power transfer

(13) Trouble shoot series and/or parallel circuits

(14) Block diagram of power supply

(15) Power supply with voltage and current specifications

(16) AC voltages, current and measuring peak RMS values

(17) AC/DC voltages with oscilloscope

(18) Block diagram of function generator

(19) Generates sine waves with function generator

(20) Generate square waves with function generator

(21) Time duration with oscilloscope

(22) Frequency and phase difference with oscilloscope

(23) Testing of inductors

(24) Measure inductance, reactance and resistance of coil

(25) Frequency and phase relationships of coil

(26) Effect on DC on inductance of iron core choke

(27) Impedance of RL circuit

(28) Relationship that exists in RL CCT

(29) Identify values of capacitors

(30) Capacitance of capacitors in series and parallel

(31) Capacitive reactance of capacitor

(32) Voltage across capacitors and capacitor voltage dividers

(33) Charging and discharging of capacitor

(34) Phase angle between voltage, current in capacitive circuit.

3.3.3 Electronics

(1) Atomic and semiconductor theory

(2) Diode applications

(3) Construct a transformer fed full and half wave rectifier

(4) Testing of zener diodes

(5) Valves of OPTO electronic devices

(6) Operation of active filters

(7) Testing of bridge rectifiers

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Government Gazette 16 April 2003

(8) Test a transistor

(9) Construct a common base amplifier

(10) Construct a common emitter amplifier

(11) Construct a common collector amplifier

(12) Field effect transistors

(13) Metal oxide field effect transistors

(14) Test a unijunction transistor

(15) Test a thyristor

(16) Construction and operation of switches

(17) Test a thyristor

(18) Voltage multipliers

(19) Voltage regulation

(20) Construct monostable

(21) Construct a astable CCT

(22) Construct bistable

(23) Introduction to Operational amplifiers

(24) Operational Amplifiers in DC CCT

(25) Operational Amplifiers in AC CCT

(26) Typical applications

(27) Block diagram and operation of an oscilloscope

3.3.4 Digitals

(1) Digital techniques in electronics

(2) Binary no system

(3) Binary coded octal system

(4) Binary coded hexa-decimal system

(5) Decimal to binary, vice versa

(6) Binary to octal, vice versa

(7) Binary to hexa-decimal, vice versa

(8) Basic logic functions

(9) Truth tables for: AND, OR, NOR, NAND

(10) Re-design CCT by using NAND or OR gates

(11) Boolean equations for logic functions

(12) Simplificate by boolean algebra and karnaugh maps

(13) Propagation delay

(14) Power dissipitation

(15) Noise shielding

(16) Fan out/in

(17) Logic levels

(18) TTL logic

(19) MOS logic

(20) Scottky TTL

(21) Three state devices

(22) Data busses

(23) Identify different packages

(24) Flip-flops

(25) Counters

(26) Arithmetic CCT

(27) Combine logic CCT

(28) Processor language

(29) Introduction to microprocessors

(30) Internal organisation of microprocessors

(31) Computer memory

3.3.5 Theory of flight

(1) Terms and definitions

(2) Aircraft controls

(3) Facts of aircraft stability

(4) Identification and operation of gas turbine engines

(5) Operation of engine and flight instruments

16 Government Gazette 16 April 2003 No. 2958

3.3.6 Hand tools and hand skills

(1) Hand tools

(2) Linear measuring tools

(3) Use steel rule and tape

(4) Set calliper and divider using rule

(5) Vernier inside, outside and depth

(6) Vernier height gauge

(7) Use of micrometers

(8) Use of a hacksaw

(9) Manufacture a workpiece

(10) Layout using scriber, vernier height gauge, steel ruler or tape

(11) Bench grinder

(12) Grinding wheels

(13) Grind drill bit

(14) Drill press

(15) File to layout

(16) Drill and ream holes

(17) Internal thread by using hand taps

(18) External thread by using hand dies

(19) Locking devices

(20) Use of screwdrivers and spanners

3.3.7 Pitot and static units

(1) Basic principles of pitot static

(2) Vacuum chamber

(3) Barometer

(4) Altimeters

(5) Mach indicator

(6) Outflow valve and pressure switches

(7) VSI

(8) Airspeed

3.3.8 Mechanical watches

(1) Watches

3.3.9 Pressure switches

(1) Altitude switch

(2) Principles of pressure switch

(3) Oils pressure switch

3.3.10Basic compass

(1) Aircraft magnetism

(2) Magnetic properties

(3) Identify components

(4) Direction of magnetic field

(5) Standby compass

3.3.11 Oxygen

(1) Properties of oxygen

(2) General life support

(3) Testing

(4) Precautions

3.3.12 Moving coil meters

(1) Moving coils

(2) JPT

3.3.13 Fuel quantity and flow systems

(1) Resistive type fuel system

(2) Capacitive type fuel system

(3) Indicator and TX

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3.3.14 Methods of temperature measurement

(1) Temperature measurement

(2) Thermocouples

(3) Resistive probes

3.3.15 Engine instruments

(1) RPM test bench

(2) RPM indicators

(3) Tacho generators

(4) Oil pressure theory

(5) Oil pressure TX

(6) Oil pressure indicators

(7) RPM system

(8) Vibration system

(9) Fuel pressure

3.3.16 Display equipment

(1) Construction of CRT

(2) CRT deflection

(3) Colour CRT

3.3.17 Synchro system

(1) Synchro theory

(2) Control synchro theory

(3) Differential synchro theory

(4) Dessyn system

(5) Synchro TX theory

(6) Synchro indicator theory

3.3.18 Gyroscopic instruments

(1) Principles of operation

(2) Artificial horizon

(3) Turn and bank indicator

(4) Directional indicator

3.3.19 Navigation systems

(1) Operation of instrument landing system

(2) RTII (Radio Magnetic Indicator)

3.3.20 Autopilots

(1) Theory

(2) Flight recorders

(3) Recorders

3.3.21 Experience

(1) 80% of core and 20% of organisation requirements.

3.3.22 Revision

(1) Trade syllabus review

4. Core syllabus for the trade : AIRCRAFT AVIONICS TECHNICIAN

4.1 Introduction

(1) Organisational administration and policy

(2) Aviation Act, 1962

(3) NAMCARS and NAMCATS

(4) Conditions of apprenticeship

4.2 Safety

(1) Occupational Health and Safety

(2) Approved first aid course

18 Government Gazette 16 April 2003 No. 2958

(3) Fire fighting - approved

(4) Incident reporting

4.3 Engineering practices

4.3.1 Soldering

(1) Soldering and soldering process

(2) Soldering to turret terminals

(3) Soldering to cup terminals

(4) Soldering to bifurcated terminals

(5) Soldering hook, pierced and lug terminals

(6) Axial lead components

(7) Soldering IC

(8) TO-5 type IC package and other multi lead devices

(9) The flat pack

(10) Desoldering

4.3.2 Electricity

(1) Principles of electrostatics

(2) Principles of conductors and insulators

(3) Which active components operates with magnetism

(4) Relays

(5) Magnetic field about wire carrying current

(6) Voltage will be induced in coil when moving through magnetic field

(7) Magnetic field about bar and horse shoe magnets

(8) Block diagram and operation of a VOM

(9) Use of ECG manual

(10) Block diagram and operation of digital multimeter

(11) AC/DC voltages with AVO meter

(12) AC/DC current with AVO meter

(13) Resistance with AVO meter

(14) AC/DC voltages with digital multimeter

(15) AC/DC current with digital multimeter

(16) Resistance with digital multimeter

(17) Values and tolerances of resistors

(18) Values and tolerances of potentiometers

(19) Resistance of series/parallel combination of resistors

(20) Kirchoff’s voltage and current laws

(21) OHM’s law determine current, voltage and resistance in basic circuit

(22) Power in DC load and maximum power transfer

(23) Trouble shoot series and/or parallel circuits

(24) Block diagram of power supply

(25) Power supply with voltage and current specifications

(26) AC voltages, current and measuring peak RMS values

(27) AC/DC voltages with oscilloscope

(28) Block diagram of function generator

(29) Generates sine waves with function generator

(30) Generate square waves with function generator

(31) Time duration with oscilloscope

(32) Frequency and phase difference with oscilloscope

(33) Testing of inductors

(34) Measure inductance, reactance and resistance of coil

(35) Frequency and phase relationships of coil

(36) DC effect on inductance of iron core choke

(37) Impedance of RL circuit

(38) Relationship that exists in RL CCT

(39) Identify values of capacitors

(40) Capacitors in series and parallel

(41) Capacitive reactance of capacitor

(42) Voltage across capacitors and capacitor voltage dividers

(43) Charging and discharging of capacitor

(44) Phase angle between voltage and current in pure capacitive circuit

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Government Gazette 16 April 2003

(45) Frequency change and connection in RL and RC circuits

(46) Impedance of RC CCT

(47) Relationship that exists in RC CCT

(48) Effect of frequency on impedance on RLC CCT

(49) Apparent power, true power and power factor in AC CCT

(50) Resonant frequency of series LC CCT

(51) Impedance of parallel RC and RLC CCT

(52) Impedance in RLC CCT

(53) Turns ratio and primary load current of insolation transformers

(54) Parallel resonance

(55) Types of batteries

(56) Battery maintenance and storage

(57) Battery internal resistance

(58) Identify, test, apply fuses

(59) Bandwidth of series resonance

(60) Battery voltages in series and parallel

(61) Series RC phase shift

4.3.3 Electronics

(1) Atomic theory for semiconductors

(2) Diodes and test

(3) Transistor and test

(4) Zener diode and test

(5) Transformer full and half wave rectifier

(6) Function generator

(7) Sine waves

(8) Common base amplifier

(9) Common emitter amplifier

(10) Common collector

(11) Class A amplifier

(12) Class B amplifier

(13) Cascading (transformer)

(14) Cascading (RC)

(15) Cascading (direct)

(16) Amplifier principle

(17) Fault Finding 2 stage amplifier

(18) Active filters

(19) Differential amplifier

(20) Complementary symmetry amplifier

(21) Clipping and clamping

(22) Fault find push pull amplifier

(23) Operational amplifier

(24) Regulated PSU

(25) Voltage doubling and tripling

(26) Audio amplifier construction

(27) Test, trace and repair amplifier

(28) FET

(29) UJT

(30) Plugs and sockets

(31) Class C amplifier

(32) RF amplifier cascading

(33) RF amplifier test, trace and repair

(34) Astable multivibrator

(35) Bistable multivibrator

(36) Schmidt trigger

(37) Diagnostic testing on TV

(38) TRIACS

(39) SCR’s

(40) Bandwidth of common emitter amplifier

(41) Bridge rectification

20 Government Gazette 16 April 2003 No. 2958

(42) OPTO electronics

(43) DIACS

(44) AM signals with function generator

(45) FM signals with function generator

(46) RF generator

(47) RF generator and AM modulation

(48) RF generator and FM modulation

(49) Carrier signals

(50) Hartley oscillator

(51) Colpitts oscillator

(52) Phase shift oscillator

(53) Crystal oscillator

(54) Phase lock loop

4.3.4 Digitals

(1) Basic logic function

(2) TTL and MOS voltage levels

(3) IC packaging

(4) Practical reasons and uses

(5) Binary number system

(6) Positive and negative logic

(7) Series/parallel data

(8) RTL logic characteristics

(9) TTL logic characteristics

(10) DTL logic characteristics

(11) Identify and explain logic levels

(12) Identify and explain TTL logic levels

(13) Introduction to microprocessors

(14) Internal organisation of microprocessors

(15) Computer memory

(16) Processor language

4.3.5 Theory of flight

(1) Terms and definitions

(2) Aircraft controls

(3) Facts of aircraft stability

(4) Identification and operation of gas turbine engines

(5) Operation of engine and flight instruments

4.3.6 Hand tools and hand skills

(1) Hand tools

(2) Linear measuring tools

(3) Set calliper and divider using rule

(4) Use a vernier

(5) Vernier height gauge

(6) Use steel rule and tape

(7) Use of micrometer

(8) Hacksaw cut to layout

(9) Manufacture a workpiece

(10) Layout using scriber, vernier height gauge, steel ruler or tape

(11) Bench grinder

(12) Grinding wheel

(13) Grind drill bit

(14) Drill press

(15) File to layout

(16) Drill and ream holes

(17) Internal thread by using hand taps

(18) External thread by using hand dies

(19) Locking devices

(20) Use of screwdrivers and spanner

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Government Gazette 16 April 2003

4.3.7 Synchro’s and servo’s

(1) Synchro and servo

4.3.8 Basic communication and antennas

(1) Telephony

(2) Volume and radio signals

(3) Propagation and paths

(4) Transmission lines

(5) Antenna principles

(6) Dipoles and vertical antenna’s

(7) UHF and antenna arrays

(8) Practical demonstrator

(9) Practical construction and SWR

(10) Magnetic recording

(11) Practical applications

(12) Introduction to radar

(13) TX block diagram-AM

(14) RX block diagram-AM

(15) RX block diagram-SSB

(16) TX block diagram-SSB

(17) TX block diagram-FM

(18) RX block diagram-FM

4.3.9 Basic TX

(1) Operator power amplifier - AM output

(2) Master oscillator - A

(3) Phase lock loop - AM

(4) Balanced modulator SSB

(5) FM TX construction

(6) Pre lines TX fault finding

(7) TX fault finding (symptoms)

(8) TX fault finding (visual inspection)

(9) TX fault finding (main dc checks)

(10) TX fault finding (signal tracing)

(11) TX fault finding (stage identification)

(12) TX fault finding (stage DC checks)

(13) TX fault finding (component Identification)

(14) TX fault finding resistance confirm

(15) Practical TX fault finding

(16) SSB TX fault diagnostics

4.3.10 Basic RX

(1) Mixers, oscillators and detectors

(2) RX auxiliary CCT

(3) RX practical AM detector

(4) RX fault finding preliminary check

(5) RX fault finding symptoms checks

(6) RX fault finding visual inspect

(7) RX fault finding main DC checks

(8) RF probe and oscillator

(9) RX fault finding signal injection

(10) RX fault finding stage Identification

(11) RX fault finding stage DC checks

(12) RX fault finding component Identification

(13) RX fault finding resistance confirmation

(14) Practical RX fault finding

(15) SSB RX fault diagnostics

22 Government Gazette 16 April 2003 No. 2958

4.3.11 Display equipment

(1) Radar displays

(2) Levels on TV unit

(3) Diagnostic testing

(4) Display equipment

4.3.12 Navigation systems

(1) ADF

(2) VOR

(3) ILS

(4) DME

(5) Radio altimeters

(6) ATC transponder

(7) Omega, VLF and weather radar

(8) Aircraft controls, locations and safety

(9) GPS

4.3.13 Aircraft communication

(1) IFF and transponder

(2) Aircraft intercom system

4.3.14 High frequency equipment

(1) Principle of operation, HF, UHF, VHF

4.3.15 Experience

(1) 80% of core and 20% of organisation requirements.

4.3.16 Revision

(1) Trade syllabus review

5. Core syllabus for the trade : AIRCRAFT ELECTRICIAN

5.1 Introduction

(1) Organisational administration and policy

(2) Aviation Act, 1962

(3) NAMCARS and NAMCATS

(4) Conditions of apprenticeship

5.2 Safety

(1) Occupational Health and Safety

(2) Approved first aid course

(3) Fire fighting - approved

(4) Incident reporting

5.3 Engineering practices

53.1 Soldering

(1) Soldering and soldering process

(2) Soldering to turret terminals

(3) Soldering to cup terminals

(4) Soldering bifurcated terminals

(5) Soldering hook, pierced and lug terminals

(6) Axial lead components

(7) Soldering Integrated Circuit

(8) TO-5 type Integrated Circuit package and other multi lead devices

(9) The flat pack

(10) Desoldering

5.3.2 Electricity

(1) Principles of electrostatics

(2) Principles of conductors and insulators

No. 2958 23

Government Gazette 16 April 2003

(3) Principles of magnetism

(4) Which active components operates with magnetism

(5) Magnetic field about wire carrying current

(6) Voltage will be induced in coil when moving through magnetic field

(7) Magnetic field about bar and horse shoe magnets

(8) Block diagram and operation of a VOM

(9) Use of ECG manual

(10) Block diagram and operation of digital multimeter

(11) AC/DC voltages with AVO meter

(12) AC/DC current with AVO meter

(13) Resistance with AVO meter

(14) AC/DC voltages with digital multimeter

(15) AC/DC current with digital multimeter

(16) Resistance with digital multimeter

(17) Values and tolerances of resistors

(18) Values and tolerances of potentiometers

(19) Resistance of series/parallel combination of resistors

(20) Kirchoff’s voltage and current laws

(21) OHM’s law determine current, voltage and resistance in basic circuit

(22) Power in DC load and maximum power transfer

(23) Measure inductance, reactance and resistance of coil

(24) Frequency and phase relationships of coil

(25) DC effect on inductance of iron core choke

(26) Impedance of RL circuit

(27) Relationship that exists in RL CCT

(28) Identify values of capacitors

(29) Capacitors in series and parallel

(30) Capacitive reactance of capacitor

(31) Voltage across capacitors and capacitor voltage dividers

(32) Charging and discharging of capacitor

(33) Phase angle between voltage and current in pure capacitive circuit

5.3.3 Electronics

(1) Construction and operation of switches

(2) Test a thyristor

(3) Voltage multipliers

(4) Voltage regulation

(5) Construct monostable

(6) Construct a astable CCT

(7) Construct bistable

(8) Introduction to operational amplifiers

(9) Operational amplifiers in DC CCT

(10) Operational amplifiers in AC CCT

(11) Typical applications

(12) Block diagram and operation of an oscilloscope

5.3.4 Digitals

(1) Digital techniques in electronics

(2) Binary of system

(3) Binary coded octal system

(4) Binary coded hexa-decimal system

(5) Decimal to binary vice versa

(6) Binary to octal vice versa

(7) Binary to hexa-decimal vice versa

(8) Basic logic functions

(9) Truth tables for: AND, OR, NAND and NOR gates

(10) Re-design CCT by using NAND or OR gates

(11) Boolean equations for logic functions

(12) Simplificate by boolean algebra and karnaugh maps

(13) Propagation delay

(14) Power dissipation

24 Government Gazette 16 April 2003 No. 2958

(15) Noise shielding

(16) Fan out/in

(17) Logic levels

(18) TTL logic

(19) MOS logic

(20) Scottky TTL

(21) Three-stage devices

(22) Data busses

(23) Identify different packages

(24) Flip-flops

(25) Counters

(26) Arithmetic CCT

(27) Combine logic CCT

(28) Processor language

(29) Introduction to microprocessors

(30) Internal organisation of microprocessors

(31) Computer memory

5.3.5 Theory of flight

(1) Terms and definitions

(2) Aircraft controls

(3) Facts of aircraft stability

(4) Identification and operation of gas turbine engines

(5) Operation of engine and flight instruments

5.3.6 Hand tools and hand skills

(1) Hand tools

(2) Linear measuring tools

(3) Use steel rule and tape

(4) Set calliper and divider using rule

(5) Vernier, inside, outside and depth

(6) Vernier height gauge layout for inspection

(7) Use of micrometer

(8) Hacksaw cut to layout

(9) Manufacture a workpiece

(10) Layout using scriber, vernier height gauge, steel ruler or tape

(11) Bench grinder

(12) Dress a grinding wheel

(13) Grind drill bit

(14) Drill press

(15) File to layout

(16) Drill and ream holes

(17) Internal thread by using hand taps

(18) External thread by using hand dies

(19) Locking devices

(20) Use of screwdrivers and spanners

5.3.7 Servicing of aircraft wiring

(1) Wire marking

(2) Cable loom

(3) Fault find and test of cable loom

(4) Wire stripper and crimping tool

(5) Plugs and sockets

(6) Crimping of various terminals

(7) Continuity tester

(8) Meggar

(9) Crimping of various splices

(10) Electronic symbols, CCT diagrams

(11) Busbars

(12) CCT diagrams of AC/DC electrical systems

No. 2958 25

Government Gazette 16 April 2003

5.3.8 Operation, maintenance and servicing of DC machines

(1) DC machines

(2) Armature and commutator servicing

(3) Field coil and measure its resistance

(4) Brushes used in DC machines

(5) Install brushes

(6) Lubricants

(7) Types of bearings

(8) Lubrication and installation of bearings

(9) Gears, clutches, brakes and switches

(10) Inspection of gears, clutches, brakes and switches

(11) O-rings and seals

(12) Inspection of O-rings and seals

(13) Lapping of steel and carbon seals

(14) Fault finding on DC machines

(15) Repair, service, overhaul and testing of DC generators

(16) Repair, service, overhaul and testing of DC motors

(17) Synchro and servos

5.3.9 Operation of aircraft batteries

(1) Batteries

(2) Voltage of battery in series and parallel

(3) Internal resistance of dry cell

(4) Safety precautions secondary cells

(5) Use of hydrometer

(6) Gravity readings of cells

(7) Inspection of aircraft batteries

(8) Test of aircraft batteries

(9) Maintenance of aircraft batteries

(10) Applications of voltage regulator

(11) Fuses

(12) Circuit breakers

(13) Testing of DC control equipment

(14) Testing of relays

(15) Testing of DC control equipment

5.3.10 Operation, servicing and maintenance of AC machines

(1) Operation of AC machines

(2) Repair and testing of AC machines

(3) Operation of an AC induction motor

(4) Overhaul and test induction motor

(5) Operation of split phase induction motor

(6) Overhaul and test capacitor start induction motor

(7) Operation of a capacitor start induction motor

(8) Operation of a capacitor start capacitor run motor

(9) Shaded pole motor

(10) Universal motor

(11) Overhaul and test of universal motor

(12) Synchronous motors

(13) Contactors

(14) Cut-out protection single-phase motors

(15) Start and switch single-phase motors

5.3.11 Electromechanical devices

(1) Rotary actuators

(2) Linear actuators

5.3.12 Operation, servicing and maintenance of aircraft control equipment

(1) Voltage regulation

(2) Magnetic amplifiers

26 Government Gazette 16 April 2003 No. 2958

(3) Brake control equipment

(4) Environmental control

5.3.13 Operation, servicing and maintenance of APU and TRU

(1) Auxiliary Power unit (AA)

(2) Applications of transformer rectifier units

(3) Applications of inverters

(4) AC ignition exciter

(5) DC ignition exciter

(6) Ignitor plug

(7) Magnetos

5.3.14 Operation, servicing and maintenance of aircraft lighting

(1) Application of aircraft lighting equipment

(2) Fault find of aircraft lighting equipment

(3) Fault find of aircraft lighting panel

(4) Explain aircraft lighting system

5.3.15 Operation of a fire protection pneumatic and air conditioning system

(1) Fire protection

(2) Pneumatics and air conditioning system

5.3.16 Experience

(1) 80% of core and 20% of organisation requirements.

5.3.17 Revision

(1) Trade syllabus review.

66.02.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Entry requirements and procedures for theoretical knowledge examinations

1.1 General

(1) Candidates who intend to sit for a theoretical knowledge examination must

complete the application form timeously to be considered for the examination

concerned.

(2) Applications must be accompanied by certified true copies of the necessary

supporting documents. It is of utmost importance that the experience claimed

is verified by the approved person of the AMO where the candidate is

employed. Particular attention should be paid to Part III of the application.

(3) After evaluation of the application the successful candidates will be advised

of the topics to be written as well as of the costs involved.

(4) All applications must reach the examination section of the CAA or the

aviation training organisation, as the case may be, before the first closing

date as specified in an aeronautical information circular, to be published

from time to time by the Director.

(5) All fees must be paid on or before the second closing date as specified in an

aeronautical information circular, to be published from time to time by the

Director. Failure to pay such fees timeously will disqualify the candidate

from being entered for the examination concerned.

(6) Applications or fees which are received after the respective closing dates

will not be accepted, regardless of the date on which such applications were

completed.

(7) A candidate accepted for a theoretical knowledge examination will be required

to answer in a written examination, questions to demonstrate his or her

knowledge of the appropriate topics which are prescribed in paragraph 2 below.

No. 2958 27

Government Gazette 16 April 2003

1.2 Procedures for examinations

(1) Written examination instructions to candidates will be attached to the letter

of acceptance from the CAA or aviation training organisation concerned.

The letter of acceptance will serve as admittance to the examination room.

Candidates unable to produce this letter of acceptance, will be denied access

to the examination room.

(2) Candidates must -

(a) report at the examination room at least 20 minutes before the scheduled

time of commencement;

(b) provide an identity document in the form of either an identity book,

AME licence with a photo or in the case of non-citizens, a passport;

(d) provide their own writing and ancillary equipment;

(e) check that their examination number and necessary information are

correct on all the documents;

(f) remain silent during the course of the examination;

(g) stop writing at the instruction of the invigilator;

(h) hand in examination script when so instructed by the invigilator;

(i) hand in all question papers, scrap paper and related documents;

(j) if there is any lack of clarity regarding a question, write his/her

complaints to the examiner on the scrap paper and hand this in with

his/her answer paper; and

(k) comply with all examination instructions during the course of the

examination.

(3) Candidates may not -

(a) retain any notes of whatever nature during the examination;

(b) communicate with another candidate;

(d) look at the work of another candidate;

(e) enter the examination room if more than 30 minutes late;

(f) leave the examination room within the first hour of the examination;

(g) leave the examination room without the invigilators permission;

(h) write on the answer sheet of multiple choice examinations apart from

the mark to indicate the answer selected;

(i) make any notes or marks on the manuals and question papers;

(j) direct any question regarding the questionnaire to the invigilator;

28 Government Gazette 16 April 2003 No. 2958

(k) use or retain in their possession, while in the examination room, a

programmable computer/calculator;

(l) smoke in the examination room;

(m) behave in an unsatisfactory manner; or

(n) disobey the instructions of the invigilator.

(4) The following types of programmable computers have been identified as such and

may not be taken into the examination room:

(a) Any calculator with an alphanumerical keyboard;

(b) Position organiser/Navmaster;

If doubt exists whether a computer may be used or not, candidates may

request the CAA or the aviation training organisation concerned, at least 30

days before the examination, to approve such computer.

1.3 Special examinations

Special examinations will only be considered if -

(1) written application is submitted in accordance with paragraph 1.1;

(2) motivation is acceptable; and

(3) the fees concerned are paid.

2. Knowledge requirements

2.1 Category A (aeroplanes)

(1) An applicant accepted for examination in Category A to cover aeroplanes

will be required to answer, in a written examination, questions to demonstrate

his or her knowledge of the following subjects, according to the construction

of the type for which accepted:

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category A.

(b) Practical arithmetical calculations, involving vulgar and decimal

fractions, percentages and mensuration.

the functioning of each component of an aeroplane, and the elementary

principles of theory of flight.

(d) The preparation of a brief report, illustrated by sketches if necessary,

describing the replacements required in the event of damage, defect

or wear.

(e) The inspection and checks for alignment after assembly of aeroplane

structural components.

(f) he inspection during and after adjustment of flying controls.

(g) The correction of faults experienced in flight, with particular reference

to rigging and control settings.

No. 2958 29

Government Gazette 16 April 2003

(h) General maintenance of the airframe (including equipment but

excluding the engine) and minor repairs.

(i) Defects and deterioration of metallic materials, treatments and

methods used against corrosion.

(j) Defects and deterioration of wooden structures, including treatments

and methods used in this connection, where applicable.

(k) Defects and deterioration of materials - other than wood or metal-

such as fabric, dopes, rubber, etc. Treatments and methods used in

rectifying defects encountered, where applicable.

(l) The inspection of control mechanisms for defects and deterioration.

(m) The inspection and scope of investigation following heavy landings.

(n) The methods of checking flying instruments for correct functioning,

the inspection of instruments and instrument installations in aeroplanes

and methods of making check calibrations.

(o) The inspection of electrical installations in aeroplanes and testing for

correct functioning and condition.

(p) The inspection of under-carriage shock-absorbing systems, brakes,

wheels and tyres.

(q) The principles of operation of retracting undercarriage and flap

operating systems and inspection of these systems installed in

aeroplanes, where applicable.

(r) The method of determining the mass and the position of the centre of

gravity of an aeroplane and the preparation of a mass and balance

schedule.

(s) Where applicable, general principles of operation of the particular

type of automatic pilot installed in the aeroplane.

(t) Where applicable, methods of coupling the automatic pilot system to

the aircraft flying controls. Tests to ensure that the automatic pilot

can be immediately disengaged and/or over-controlled in any

emergency.

(u) Where applicable, the daily maintenance and periodical inspections

necessary to ensure correct operation and functioning of automatic

pilot installations. Such minor replacements and adjustments to the

automatic pilot on the aeroplane as specified in the maintenance

manual as being within the scope of an aircraft maintenance engineer

licensed in Category A.

(v) The regulations in Part 66 so far as they affect an aircraft maintenance

engineer licensed in Category A.

(w) Detailed knowledge of the construction of the airframe and the

principles of operation of the components.

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects prescribed in subparagraph (1). An applicant may also be

required to demonstrate his or her practical knowledge of inspection, the use of

measuring instruments and the interpretation of drawings.

30 Government Gazette 16 April 2003 No. 2958

2.2 Category B (aircraft)

(1) An applicant accepted for examination in Category B for the certification

of the repair and overhaul of aircraft, incorporating the use and replacement

of approved parts and components only, will be required to answer, in a

written examination, questions to demonstrate his or her knowledge of the

following subjects, according to the construction of the type for which

accepted:

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category B.

(b) Practical arithmetical calculations, involving vulgar and decimal

fractions, percentages and mensuration.

the functioning of each component of an aircraft and the elementary

principles of theory of flight.

(d) The preparation of an inspection report on the condition of an aircraft

that is about to be overhauled.

(e) The method of systematically carrying out the required overhaul.

(f) The procedure for compiling an inspection report of work done in

the overhaul of the components.

(g) The approved repair scheme applicable to the complete rectification

and overhaul of the components, including fixed-pitch propellers or

rotors.

(h) The inspection of the repair, overhaul and assembly of components

and the workshop processes involved, such as gluing, doping, welding,

brazing and soldering, so far as they affect the incorporation of

previously approved replacement members and parts, including the

appropriate protective and heat treatments, where applicable.

(i) The inspection and methods of checking for alignment and symmetry

of components such as fuselages, hulls, floats, wings and fixed-pitch

propellers and rotors, where applicable.

(j) The inspection of the repair, overhaul and functional testing of tanks,

radiators and coolers.

(k) The inspection of the repair, overhaul and functional testing of shock-

absorbing devices of landing gear.

(l) The inspection of the engine installations, including controls and fuel,

oil and coolant systems.

(m) The inspection of the complete aircraft, including controls and

trimming devices, for correct assembly and functioning.

(n) The general principles of electricity and magnetism and, as far as it is

practicable on the ground, the inspection of the installation and

functioning of instruments, automatic pilots and electrical equipment.

Methods of making check calibrations.

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Government Gazette 16 April 2003

(o) The method of determining the mass and the position of the centre of

gravity of an aircraft and the preparation of the mass and balance

schedule.

(p) The preparation of a sketch from which a finished drawing can be

made.

(q) The inspection of the assembly and functioning of retracting devices

of landing gear, where applicable.

(r) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category B.

(s) Detailed knowledge of the construction of the airframe and its

components.

(t) The composition, properties, uses, defects and protection against

corrosion and deterioration of the principal materials used in the

construction of the airframe and its components.

(u) The identification, selection, inspection and physical testing of the

various timbers used in the construction of the aircraft, where applicable.

(v) The methods of examination and physical testing of all the non-

metallic materials (other than timbers) used in the construction of the

aircraft to ensure compliance with specification requirements.

(w) The inspection during manufacture of non-metallic materials into

aircraft parts and components, of the workshop processes involved

in gluing, stitching, doping and protective measures against corrosion

and deterioration, where applicable.

(x) The methods of examination and physical testing of both ferrous and

non-ferrous metallic materials used in the construction of the aircraft

to ensure compliance with specification requirements.

(y) The inspection during manufacture of metallic materials into aircraft

parts and components, and of the workshop processes involved. Heat

treatment, including temperature control, welding, soldering, brazing,

electro-plating and other protective treatments against corrosion and

deterioration.

(z) The inspection during construction of components such as fuselages,

wings, fixed-pitch propellers, rotors, tanks, radiators and coolers.

(2) Where, subsequent to the written examination, a supplementary examination

is required by the Director, an applicant may be required to answer further

questions in respect of the 26 subjects, as applicable, prescribed in

subparagraph (1). An applicant may also be required to demonstrate his or

her practical knowledge of inspection, the use of measuring instruments

and their interpretation of drawings.

2.3 Category C (engines)

(1) An applicant accepted for examination in Category C to cover aeroplanes

will be required to answer, in a written examination, questions to demonstrate

his or her knowledge of the following subjects, according to the construction

of the type for which accepted:

32 Government Gazette 16 April 2003 No. 2958

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category C.

(b) Practical arithmetical calculations involving vulgar and decimal

fractions, percentages and mensuration.

(d) The preparation of a brief report, illustrated by sketches if necessary,

describing the replacements required in the event of damage, defect

or wear.

(e) Methods of inspection for defects during rectification, clearances and

allowances for wear and distortion.

(f) Methods of rectification of defects, inspection during and after re-

assembly.

(g) Inspection and checks on complete installation and systems, as

required during engine installation.

(h) The methods of checking engine instruments for correct functioning,

the inspection of engine instruments and instrument installations in

aeroplanes, and methods of making check calibrations.

(i) Testing and tuning during ground running in accordance with the

manufacturer’s recommended procedure, including diagnosis of all

types of running faults.

(j) Preparing engines for initial installation and inhibiting of engines.

(k) General maintenance of the engine and its installation, including minor

repairs.

(l) Where applicable, the assembly of variable-pitch propellers

dismantled for ease of transport, assembly of propeller to engine,

inspection of damage to propellers, permissible limits and methods

of rectification.

(m) Where applicable, the principles of variable-pitch propellers and

controlling devices, inspection of correct assembly and functioning,

ground testing and rectification of defects.

(n) Detailed knowledge of the construction of the type of engine for which

accepted.

(o) Constructional details of parts, the rectification of which may be

certified by the holder of a licence in Category C.

(p) Typical faults and defects calling for partial overhaul or other

rectification which may be certified by the holder of a licence in

Category C.

(q) The inspection of the complete fuel, oil and, where applicable, coolant

systems and tests for functioning and defects and methods of

rectification.

(r) Inspection of ignition systems for correct installation, condition, timing

and functioning, and test for defects and methods of rectification.

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Government Gazette 16 April 2003

(s) The principles of operation of carburettors and/or injectors, inspection

of carburettors and/or injectors and induction systems, test for

functioning and defects.

(t) Where applicable, the inspection of fixed-pitch propellers and checks

during assembly to engine.

(u) Where applicable, the principles of supercharging and the operation

of boost controls, inspection for correct assembly adjustment and

functioning.

(v) The composition, properties, uses, defects and protection against

corrosion and deterioration of the principal materials used in the

construction of the engine, its parts, accessories and installation.

(w) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category C.

(2) Where, subsequent to the written examination, a supplementary examination

is required by the Director, an applicant may be required to answer further

questions in respect of the subjects prescribed in subparagraph (1). An applicant

may also be required to demonstrate his or her practical knowledge of

inspection, the use of measuring instruments and the interpretation of drawings.

2.4 Category D (piston engines)

(1) An applicant accepted for examination in Category D for the certification

of the overhaul and repair of engines, incorporating the use and replacement

of approved parts and components only, will be required to answer, in a

written examination, questions to demonstrate his or her knowledge of the

following subjects, according to the construction of the type for which

accepted:

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category D.

(b) Practical arithmetical calculations, involving vulgar and decimal

fractions, percentages and mensuration.

accessories.

(d) The preparation of an inspection report on the condition of an engine

stripped down for complete overhaul.

(e) The method of systematically carrying out the complete overhaul

and repair of the engine, its parts and accessories, not incorporating

electric principles but including the replacement of the mechanical

parts of a magneto.

(f) The procedure for completing the inspection report on work done in

the overhaul of the parts.

(g) The methods of inspection during overhaul of the parts of an engine

for wear, misalignment, distortion and damage. The defects likely to

be encountered and their rectification, the permissible allowances

for wear and distortion and the balancing of parts.

34 Government Gazette 16 April 2003 No. 2958

(h) The inspection during rectification of parts and the re-assembly of

the engine and of the workshop processes involved, so far as they

affect the incorporation and fitting of previously approved replacement

parts, including the appropriate protective treatments applicable.

(i) The methods of inspection and checking the correct functioning of

the ignition, carburation or injection, bonding and, where applicable,

coolant systems.

(j) The inspection of the complete engine, including controls for correct

assembly and functioning.

(k) The principles, functioning, operation, adjustment and control of the

equipment used for testing engines.

(l) The inspection, adjustment and testing of an engine and all its

accessories after overhaul, including the measurement of the power

developed and of the fuel and oil consumption.

(m) The preparation of a sketch from which a finished drawing can be

made.

(n) The methods of inspecting and checking of the correct functioning

of propeller control systems, where applicable.

(o) The principles of supercharging and the operation and testing of

superchargers and boost control systems, where applicable.

(p) Detailed knowledge of the construction of the engine, its parts and

accessories.

(q) The composition, properties, uses, defects and protection against

corrosion and deterioration of the principal materials used in the

construction of the engine, its parts, accessories and installation.

(r) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category D.

(s) The methods of examination and physical testing of both ferrous and

non-ferrous metallic materials used in the construction of the engine

to ensure compliance with specification requirements.

(t) The methods of examination and physical testing of metal forgings,

castings and pressings used in the construction of the engine, for the

detection of characteristic defects which may render them unsuitable

and to ensure compliance with both specification and drawing

requirements.

(u) The inspection of metallic materials during the manufacture of metal

forgings, castings and pressings into engine parts, the repair of parts

and of the workshop processes involved, heat treatments, including

temperature control of hardening, tempering, case hardening and

normalising procedures, and of welding, white-metalling, soldering,

brazing, electroplating and other protective treatments against

corrosion and deterioration.

(v) The inspection and methods of checking the finished parts prior to

and during assembly into the complete engine for correct alignment,

mass and balance.

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

No. 2958 35

Government Gazette 16 April 2003

in respect of the subjects prescribed in subparagraph (1). An applicant may also be

required to demonstrate his or her practical knowledge of inspection, the use of

measuring instruments and the interpretation of drawings.

2.5 Categories A and C (rotorcraft, including engines)

(1) An applicant accepted for examination in Categories A and C for the

certification before flight of rotorcraft, including engines, will be required

to answer, in a written examination, questions to demonstrate his or her

knowledge of the following subjects, according to the construction of the

type for which accepted:

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so

far as they affect an aircraft maintenance engineer licensed in

Categories A and C.

(b) Practical arithmetical calculations, involving vulgar and decimal

fractions, percentages and mensuration.

its engine or engines, and its equipment.

(d) The various terms used in rotorcraft construction and aerodynamics

and the functioning of each component of a rotorcraft.

(e) The assembly of rotorcraft structures, with particular reference to the

assembly and functioning of the rotors, including transmission.

(f) The adjustment of the rotors for the purpose of rectifying faults

experienced in flight as a result of a defect or maladjustment,

(g) The inspection of electrical installations in rotorcraft and testing for

correct functioning and condition.

(h) Defects and deterioration in covered surfaces, in timber and metal

structures, as applicable and methods of rectification.

(i) The principles and functioning of shock-absorbing devices and

retracting devices of landing gear, where applicable.

(j) The methods of effecting minor repairs and replacements.

(k) The methods of checking flying and engine instruments for correct

functioning, methods of making check-calibrations, and inspection

of instruments and installations in rotorcraft.

(l) The preparation of a brief report, illustrated by sketches if necessary,

describing the replacements of repairs required in the case of damage.

(m) The principles of operation of the engine, its parts and accessories.

(n) Detailed knowledge of the construction of the rotorcraft and its engine

or engines.

(o) Methods of inspecting engines during replacement of approved parts;

the defects likely to be encountered and their rectification and the

permissible allowances for wear and distortion.

(p) The inspection, adjustment and testing of an engine and its accessories

after the replacement of approved parts, to ensure correct functioning

and power output.

36 Government Gazette 16 April 2003 No. 2958

(q) The inspection, before flight, of an engine and its installation, engine

ignition apparatus, carburettors, pumps, filters and starting mechanism.

(r) The use of equipment required to test engines after the replacement

of approved parts.

(s) The principles of supercharging and the operation of superchargers,

where applicable.

(t) The principles of operation of the transmission and the inspection

and rectification of faults in the system.

(u) The composition, properties, uses, defects and protection against

corrosion and deterioration of the principal materials used in the

construction of the rotorcraft, including its engine or engines.

(v) The method of determining the mass and the centre of gravity of a

rotorcraft and the preparation of a mass and balance schedule.

(w) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Categories A and C.

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects prescribed in subparagraph (1). An applicant may also be

required to demonstrate his or her practical knowledge of inspection, the use of

measuring instruments and the interpretation of drawings.

2.6 Category X (automatic pilots)

(1) An applicant accepted for examination in Category X for the certification

of the repair and overhaul of automatic pilots will be required to answer, in

a written examination, questions to demonstrate his or her knowledge of

the subjects prescribed in items (a) to (d) and, in addition, according to the

class of automatic pilot for which accepted, questions to demonstrate his or

her knowledge of the subjects prescribed in items (e) to (l), (m) to (t) or (u)

to (bb):

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category X.

(b) Elementary physics and the elementary practical mathematical

calculations involved.

operation and their application to the particular automatic pilot for

which the application is accepted.

(d) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category X (automatic pilots).

Automatic pilots employing hydraulic operation

(e) General principles of construction and operation of the control units,

sub-assemblies, hydraulic and air systems.

(f) The necessary inspection prior to installation in the aircraft of the

automatic pilot and its sub-assemblies, including oil pumps, regulators

and accessories.

No. 2958 37

Government Gazette 16 April 2003

(g) The inspection, during and after installation in the aircraft, including

procedure for bleeding the hydraulic system. Tests to be carried out

to ensure that the automatic pilot can be disengaged quickly and/or

manually over-controlled in emergency in flight and that it is correctly

installed.

(h) The types of faults which may develop in operation and methods

adopted to trace the causes. The adjustment and rectification of minor

defects and measures taken to prevent their recurrence.

(i) The inspection of parts of the control units and sub-assemblies during

overhaul, repair or modification and the correction of physical and

mechanical faults peculiar to such parts. The effect of variation and

adjustment.

(j) The methods and procedure for lapping, polishing, testing and

inspecting ball-races, cones and pivots to the gyro systems, gimbal

systems and attachments.

(k) The conventional method of tuning, balancing, calibrating, adjusting

and testing during and after overhaul, repair or modification of the

sub-assemblies and the complete automatic pilot in the workshop so

far as is permitted by the manufacturer’s approved overhaul and repair

manual.

(l) The principles employed and methods adopted in construction,

operation, calibration and testing of the substandard test apparatus

normally used in automatic pilot repair workshops. The use for this

purpose of reference standards.

Automatic pilots employing pneumatic operation

(m) The general principles of operation and construction of the control

unit or units and sub-assemblies, including the monitoring system

and air system.

(n) The necessary inspection prior to installation in the aircraft of the

automatic pilot and its sub-assemblies including the compressors,

separators and driers.

(o) The inspection during and after installation in the aircraft. Tests to be

carried out to ensure that the automatic pilot can be disengaged quickly

and/or manually over-controlled in emergency in flight and that it is

correctly installed.

(p) The type of faults which may develop in operation, methods adopted

to trace the causes. The adjustment and rectification of minor defects

and measures to be taken to prevent their recurrence.

(q) The inspection of parts of the control units and sub-assemblies during

overhaul, repair or modification and the correction of physical and

mechanical faults peculiar to such parts. The effect of variation and

adjustment.

(r) The methods and procedures for lapping, polishing, testing and

inspecting ball-races, cups, cones and pivots of the gyro systems,

gimbal systems and attachments.

(s) The conventional method of tuning, balancing, calibrating, adjusting

and testing during and after overhaul, repair or modification of the

sub-assemblies and the complete automatic pilot in the workshop so

far as is permitted by the manufacturer’s approved overhaul and repair

manual.

38 Government Gazette 16 April 2003 No. 2958

(t) The principles employed and the methods adopted in the construction,

operation, calibration and testing of the substandard test apparatus

normally used in automatic pilot repair workshops. The use for this

purpose of reference standards.

Automatic pilots employing electrical operation (including those with

electronic amplifiers)

(u) Electricity and magnetism, definitions of terms used and their

application and the elementary practical mathematical calculations

involved. Basic electronic principles, the operation of electronic

components, electronic circuit analysis and basic calculations involved

with such circuits.

(v) General principles of operation and construction of the control unit

or units and sub-assemblies, including the electrical, hydraulic and/

or air systems and monitoring systems, where applicable.

(w) The necessary inspection prior to installation in the aircraft of the

automatic pilot and its sub-assemblies.

(x) The inspection during and after installation in the aircraft of the

automatic pilot and its sub-assemblies.

(y) The types of electrical and mechanical faults which may develop in

operation and the methods adopted to trace the causes. The

adjustments and rectification of minor defects and measures taken to

prevent their recurrence.

(z) The inspection of components of the control units and sub-assemblies

during overhaul, repair or modification and the correction of physical,

electrical and mechanical faults peculiar to such components. The

effect of variation and adjustment.

(aa) The conventional method of calibrating, adjusting and testing

during and after overhaul, repair or modification of the sub-

assemblies and the complete automatic pilot in the workshop

so far as is permitted by the manufacturer’s approved overhaul

and repair manual.

(bb) The principles employed and methods adopted in the

construction, operation, calibration and testing of the substandard

test apparatus normally used in automatic pilot repair workshops.

The use for this purpose of reference standards.

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects prescribed in subparagraph (1) according to the class of

automatic pilot for which application is accepted. An applicant may also be required

to demonstrate his or her practical knowledge of inspection, the use of measuring

instruments and the interpretation of drawings.

2.7 Category X (compasses)

(1) An applicant accepted for examination in Category X for the certification

of the installation and compensation of direct-reading compasses will be

required to answer, in a written examination, questions to demonstrate his

or her knowledge of the subjects prescribed in items (a) to (j). An applicant

for examination in remote-reading compasses will be required in addition

to answer, in a written examination, questions to demonstrate his or her

knowledge of the subjects prescribed in items (k) to (m) according to the

form of construction applicable to the type of remote-reading compass for

which the application is accepted:

No. 2958 39

Government Gazette 16 April 2003

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category X.

(b) The general principles of magnetism, magnetic materials and

permanent magnets, polarity and strength of bar magnets, the earth

as a magnet, the magnetic meridian and its relationship to the

geographic meridian.

including magnet systems, damping liquid, verge ring and markings,

rubber line, grid wires, shock-absorbing suspension and corrector

box, the inspection necessary for the detection of common defects

that may arise in use.

(d) Minor external repairs to the compass and de-aerating the compass

liquid.

(e) The installation of compasses in aircraft, points to be observed and

the procedure adopted before adjustments are made.

(f) The precautions to be observed in the choice of a site for and the

preparation of a “swinging base” and checking the base by means of

a landing compass.

(g) The compensation of compasses in aircraft, including the observation

of deviations, the calculations and adjustments necessary for

corrections of coefficients A, B and C, the procedure to be followed

after the corrections are made and the preparation of deviation cards

and graphs.

(h) The use of a landing compass for the checking of compasses in aircraft.

(i) The compensation of the compass in a marine aircraft afloat by means

of a bearing plate, on the aircraft, or by the use of a landing compass

ashore.

(j) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category X (compasses).

(k) The general principles of construction of remote-reading aircraft com-

passes, the principles of operation and functioning of the particular

type for which the application is made and inspection of the parts

necessary, prior to installation in the aircraft.

(l) The installation and correct positioning of the remote-reading compass

in the aircraft, including the components and accessories, points to

be observed and the procedure adopted before adjustments are made.

(m) The methods and procedure adopted for the compensation of remote-

reading compass in the aircraft, the adjustments to be made to the

master compass, the master indicator and the repeater units in order

to ensure correct functioning.

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects prescribed in subparagraph (1). An applicant may also be

required to demonstrate his or her knowledge, in a practical form, of the subjects

prescribed above.

40 Government Gazette 16 April 2003 No. 2958

2.8 Category X (electrical equipment)

(1) An applicant accepted for examination in Category X for the certification

of the overhaul, repair and modification of aircraft electrical equipment,

including installations in aircraft with main power supply systems, the

nominal tension of which does not exceed 30 volts, will be required to answer,

in a written examination, questions to demonstrate his or her knowledge of

the following subjects:

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so

far as they affect an aircraft maintenance en-gineer licensed in

Category X.

(b) Elementary electricity and magnetism, definitions of the terms used

and their application, and the elementary practical mathematical

calculations involved.

induction machines used on aircraft.

(d) The method of carrying out overhauls and repairs to electro-magnetic

induction machines used on aircraft, the inspection necessary to detect

defects, mechanical, electrical and magnetic, as a result of wear and

deterioration, and the permissible allowances in each case.

(e) The inspection of parts of aircraft electrical generators, motors,

automatic control and switch gear.

(f) The schedule of tests, the equipment required for such tests, and the

methods employed in carrying out functional tests to prove the

satisfactory condition of electrical generators and motors after

overhaul and repair.

(g) The general principles of construction and functioning of all types of

automatic control and switch gear, the method of carrying out

overhauls, repairs and tests.

(h) The installation, functioning and testing of all types of electrical

batteries.

(i) The selection and inspection of materials used in the construction,

repair and overhaul of aircraft electrical equipment.

(j) The types, sizes and capacities of cables, fuses and switch gear used

in aircraft electrical installation.

(k) The specified light-angles of navigation lamps, the installation,

inspection, overhaul and testing of navigation, signalling and landing-

light equipment.

(l) Methods of inspecting and testing the whole of the electrical system

installed in aircraft, including the bonding and earthing system.

(m) The preparation of a circuit diagram illustrating the symbols used to

denote the various items of equipment.

(n) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category X (electrical equipment).

No. 2958 41

Government Gazette 16 April 2003

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects prescribed in subparagraph (1). An applicant may also be

required to demonstrate his or her practical knowledge of inspection, the use of

measuring instruments and the interpretation of drawings.

2.9 Category X (ignition equipment)

(1) An applicant accepted for examination in Category X for the certification

of the repair and overhaul of aircraft engine ignition equipment will be

required to answer, in a written examination, questions to demonstrate his

or her knowledge of the following subjects:

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category X.

(b) Elementary electricity and magnetism, definitions of the terms used

and their application and the elementary practical mathematical

calculations involved.

apparatus, including screened types fitted to aircraft engines.

(d) The method of carrying out overhauls and repairs, the inspection

necessary to detect defects, mechanical, electrical and magnetic, as a

result of wear and deterioration and the permissible allowances in

each case.

(e) The inspection and testing of parts and assemblies, and the equipment

required for such tests.

(f) The schedule of tests, the equipment for such tests, and the methods

employed in carrying out functional tests to prove the satisfactory

condition of apparatus after overhaul and repair.

(g) The construction and functioning of impulse starters, the method of

carrying out overhauls, repairs and tests.

(h) The construction and functioning of automatic timing devices, the

methods of carrying out overhauls, repairs and tests.

(i) The construction, inspection and testing of ignition cables, screened

harness and fittings, the defects and deterioration likely to be

encountered, and the effect on engine ignition apparatus and spark

plugs, of metal braiding on cables.

(j) The overhaul and testing of spark plugs.

(k) The preparation of a wiring diagram from which a finished drawing

could be made of the internal and external connections of a typical

ignition system.

(l) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category X (engine ignition equipment).

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects prescribed in subparagraph (1). An applicant may also be

required to demonstrate his or her practical knowledge of inspection, the use of

measuring instruments and the interpretation of drawings.

42 Government Gazette 16 April 2003 No. 2958

2.10 Category X (instruments)

(1) An applicant accepted for examination in Category X for the certification

of the overhaul, repair and modification of aircraft and engine instruments,

excluding electrically operated instruments, will be required to answer, in a

written examination, questions to demonstrate his or her knowledge of the

subjects prescribed in items (a) to (j). An applicant accepted for examination

in Category X for the certification of the overhaul, repair or modification of

aircraft and engine instruments, including electrically operated instruments,

will be required in addition to answer, in a written examination, questions

to demonstrate his or her knowledge of the subjects prescribed in items (k)

and (l).

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1, so far

as they affect an aircraft maintenance engineer licensed in Category X.

(b) Elementary physics and the elementary practical mathematical

calculations involved.

of all types of mechanically operated aircraft and engine instruments.

(d) The types of fault which may develop in operation, methods adopted

to trace the causes and measures taken to prevent their recurrence,

the effect of variation and adjustment on instrument mechanisms.

(e) The inspection of parts of the various instruments during overhaul

and repair, the correction of mechanical faults peculiar to such

instruments.

(f) The conventional methods of calibration, adjusting and testing aircraft

and engine instruments, high and low pressure tests, temperature and

vibration tests, and luminosity tests on luminous fluorescent dial

markings.

(g) The principles employed, and method adopted, in the construction

and operation of the substandard test apparatus normally used in

instrument repair shops for calibration purposes.

(h) Methods of testing and checking the accuracy of the substandard test

apparatus, and the use for this purpose of reference standards.

(i) The preparation of a sketch from which a finished drawing could be

made of a part of a typical instrument mechanism.

(j) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category X (instruments).

(k) Elementary electricity and magnetism, definitions of the terms used

and their application, and the elementary practical mathematical

calculations involved.

(l) The general principles of construction, operation, overhaul and repair

of all electrically-operated instruments used in aircraft, methods of

adjustment, detection and rectification of faults peculiar to specific

instruments and equipment, and the tests necessary to prove correct

functioning.

No. 2958 43

Government Gazette 16 April 2003

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects prescribed in subparagraph (1). An applicant may also be

required to demonstrate his or her practical knowledge of inspection, the use of

measuring instruments and the interpretation of drawings.

2.11 Category X (variable-pitch propellers)

(1) An applicant accepted for examination in Category X for the certification

of the overhaul, repair or modification of variable-pitch propellers, will be

required to answer, in a written examination, questions to demonstrate his

or her knowledge of the subjects prescribed in items (a) to (o), according to

the form of construction applicable to the type of propeller for which

application is accepted. An applicant accepted for examination in Category

X for the certification of the overhaul, repair or modification of electrically

operated variable-pitch propellers will be required in addition to answer, in

a written examination, questions to demonstrate his or her knowledge of

the subjects prescribed in item (p):

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1 so far

as they affect an aircraft maintenance engineer licensed in Category X.

(b) Practical arithmetical calculations, involving vulgar and decimal

fractions, percentages and mensuration.

types of variable-pitch propellers.

(d) The preparation of an inspection report on the condition of the

propeller dismantled for complete overhaul.

(e) The method of systematically carrying out the required overhaul.

(f) The procedure for completing the inspection record on work done in

the overhaul of the parts.

(g) The approved repair scheme applicable to the rectification and

overhaul of the parts.

(h) The methods of inspection during the overhaul of the parts of a

propeller for wear, malalignment, distortion and damage. The defects

likely to be encountered and their rectification, the permissible

clearances and allowances for wear and distortion, and the balancing

of parts.

(i) The inspection during rectification of parts and components and the

re-assembly of the propeller, the workshop processes involved, so

far as they affect the incorporation and fitness of previously approved

replacement parts, including the appropriate protective treatments

applicable.

(j) The inspection during rectification of spinners, fans and all parts

normally attached to, and rotating with, propellers.

(k) The construction and functioning of auxiliary oil pumps, motors,

constant-speed governors, controlling means and de-icing equipment

and the methods of carrying out overhauls, repairs and tests.

44 Government Gazette 16 April 2003 No. 2958

(l) The inspection of a complete propeller for correct assembly,

adjustment, mass and balance, methods employed for correcting

balance and checking torque loading of blades.

(m) Assembly of a propeller to an engine, check testing and adjustment

for performance and correction of faults.

(n) The preparation of a sketch from which a finished drawing could be

made of a part of the operating mechanism of a variable-pitch

propeller.

(o) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category X (variable-pitch propellers).

(p) Elementary electricity and magnetism, definitions of the terms used

and their application and the elementary practical mathematical

calculations involved.

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects, as applicable, prescribed in subparagraph (1). An applicant

may also be required to demonstrate his or her practical knowledge of inspection,

the use of measuring instruments and the interpretation of drawings.

2.12 Category X (avionic equipment)

(1) An applicant accepted for examination in Category X for the certification

of the overhaul, repair, modification and installation of avionic equipment

in aircraft will be required to answer in a written examination, questions to

demonstrate his or her knowledge of the subjects prescribed in items (a) to

(f), and in addition, according to the rating for which he has been accepted,

questions to demonstrate his or her knowledge of the subjects prescribed in

items (g) to (j) or (k) to (o):

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1 so far

as they affect an aircraft maintenance engineer licensed in Category X.

(b) Elementary electricity and magnetism, definitions of terms used and

their application and the elementary mathematical calculations involved.

(d) Basic semi-conductor and digital devices theory and its application.

(e) Operation and use of electronic test equipment and the limitations on

the use of such equipment.

(f) The regulations in Part 66, so far as they affect an aircraft maintenance

engineer licensed in Category X (avionic equipment).

Avionic equipment excluding equipment employing pulse techniques

(g) Methods of inspecting and testing the whole of the avionic system,

excluding equipment employing pulse techniques, installed in aircraft,

including the bonding and earthing system.

(h) Theory of operation, maintenance procedures, alignment and testing

of all types of avionic equipment excluding equipment employing

pulse techniques.

No. 2958 45

Government Gazette 16 April 2003

(i) The installation of all such equipment in aircraft, the procedures to

be followed and the precautions to be observed.

(j) Theory of operation, installation, inspection and testing of appropriate

avionic equipment antenna and transmission lines.

Avionic equipment employing pulse techniques

(k) Basic theory and principles of pulse techniques.

(l) Methods of inspecting and testing the whole of the avionic system

employing pulse techniques installed in aircraft, including the bonding

and earthing system.

(m) Theory of operation, maintenance procedures, alignment and testing

of all types of avionic equipment employing pulse techniques.

(n) The installation of all such equipment in aircraft, the procedures to

be followed and the precautions to be observed.

(o) Theory of operation, installation, inspection and testing of appropriate

avionic equipment antenna and transmission lines.

(2) Where, subsequent to the written examination, a supplementary examination is

required by the Director, an applicant may be required to answer further questions

in respect of the subjects, as applicable, prescribed in subparagraph (1). An applicant

may also be required to demonstrate his or her practical knowledge of inspection,

the use of measuring instruments and the interpretation of drawings.

2.13 Category X (aircraft welding)

(1) An applicant accepted for the examination in Category X (aircraft welding)

will be required to answer in a written examination, questions to demonstrate

his or her knowledge of the subjects prescribed in items (a) to (f) and, in

addition, shall pass practical tests to demonstrate his or her knowledge of

the subjects prescribed in item (g):

(a) British Civil Airworthiness Requirements, British Civil Aircraft

Inspection Procedures and the FAA Advisory Circular 43.13-1A, in

so far as these affect an aircraft maintenance engineer licensed in

Category X (aircraft welding).

(b) Elementary welding procedures and their application, definitions and

terms used, and the elementary mathematical calculations involved

in aircraft welding.

(d) Basic strength of material and heat treatment theory and its application.

(e) Operating and use of test equipment and the limitations on the use of

such equipment.

(f) The regulations in Part 66 in so far as they affect an aircraft

maintenance engineer licensed in Category X (aircraft welding).

(g) The welding requirements as prescribed in Schedule 1.

(2) Where, subsequent to the written examination, a supplementary examination

is required by the Director, an applicant may be required to answer further

questions in respect of the subjects prescribed in subparagraph (1). An

applicant may also be required to demonstrate his or her practical knowledge

of inspection, the use of measuring instruments and the interpretation of

drawings.

46 Government Gazette 16 April 2003 No. 2958

2.14 Category W

(Reserved.)

3. Retesting after failure

(1) The pass mark for any written examination referred to in paragraph 1 is 75%.

(2) A candidate who fails with a mark of between 71% and 74%, may apply in

writing for a remark within 30 days from the date of receiving the

examination results, on payment of the appropriate fee.

If the remark is successful, the fee will be refunded.

(3) A candidate who fails with a mark of above 68%, may apply to be entered

for the following examination sitting.

(4) A candidate who fails with a mark of between 60% and 68%, has to wait for

six months before applying to enter again.

(5) A candidate who fails with a mark of less than 60%, will have to wait for 12

months before applying to enter again.

66.02.4 EXPERIENCE

1. Category A (aeroplanes): Issue or addition of Category A

An applicant for the issuing of a licence in Category A, or for the addition of

Category A to an existing licence, must have had the experience, appropriate to

the type for which application is made, shown in the following table:

Applications relating to

airframes will be

accepted for the

following

Total aeronautical

engineering

experience

Experience in

column 2 must

include periods of

general practical

maintenance and

inspection solely of

airframes prior to

flight, totalling

Experience in column 3

must include periods of

practical maintenance and

inspection prior to flight on

the type for which

application is made (or a

type of similar charac-

teristics with satisfactory

experience on the type),

totalling

training

3 years

With training

2 years

Without

training

12 months

Without

training

6 months

Without With training

6 months

All or any one of the types

classified under group 1

All or any one of the types

classified under group 2

All or any one of the types

classified under group 3

All or any one of the types

classified under group 4

All or any one of the types

classified under group 5

All or any one of the types

classified under group 6

All or any one of the types

classified under group 7

All or any one of the types

classified under group 8

All or any one of the types

classified under group 9

All or any one of the types

classified under group 10

All or any one of the types

classified under group 11

All or any one of the types

classified under group 12

No. 2958 47

Government Gazette 16 April 2003

2. Category A (aeroplanes): Extension of Category A

(1) An applicant for the extension of Category A of his or her licence must have

had six months’ experience of practical maintenance and inspection of

airframes spent solely on the type (or types in the group in the case of an

application in respect of a group) for which the extension is desired, unless

the licence is

(2) Where the application is for an extension to cover an airframe of appreciably

simpler design and classified in a different group to that or those for which

the licence is already valid, then the Director may reduce the six-month

qualifying period required above to suit the circumstances of the case.

3. Category B: Issue or addition of Category B

An applicant for the issuing of a licence in Category B, or the addition of Category

B to an existing licence for the certification of the repair and overhaul of airframes,

must have had the experience, appropriate to the type for which application is

made, shown in the following table:

4. Category B: Extension of Category B

An applicant for the extension of Category B of his or her licence must have had

six months’ experience of the practical repair and overhaul of airframes spent

solely on the type (or types in the group in the case of an application in respect of

a group) for which the extension is desired, unless the licence is already valid in

Category B for a type classified in the same group as that in which the type applied

for is classified.

5. Category C (engines): Issue or addition of Category C

(1) An applicant for the issuing of a licence in Category C, or the addition of

Category C to an existing licence, must have had the experience, appropriate

to the type for which application is made, shown in the following table:

Applications relating to

airframes will be

accepted for the

following

Total aeronautical

engineering

experience

Experience in

column 2 must

include periods of

general practical

maintenance and

inspection solely of

airframes prior to

flight, totalling

Experience in column 3

must include periods of

practical maintenance and

inspection prior to flight on

the type for which

application is made (or a

type of similar charac-

teristics with satisfactory

experience on the type),

totalling

Without

training

3 years

With training

2 years

Without

training

12 months

With training

6 months

With or without training

6 months

All or any one of the types

classified under group 1

All or any one of the types

classified under group 2

All or any one of the types

classified under group 3

All or any one of the types

classified under group 4

All or any one of the types

classified under group 5

All or any one of the types

classified under group 6

48 Government Gazette 16 April 2003 No. 2958

(2) Where a licence is already valid under Category D for an engine classified

under groups 01, 02, 03 and 04, then the experience requirements for the

addition of Category C to include the same engine will be half of those

stated above.

6. Category C (engines): Extension of Category C

(1) An applicant for the extension of Category C of his or her licence must

have had six months’ experience on the practical maintenance and inspection

of engines prior to flight spent solely on the type (or types in the group in

the case of an application in respect of a group) for which the extension is

desired, unless the licence is already valid in Category C for a type classified

in the same group as that in which the type applied for is classified, in

which case evidence of recent satisfactory experience or the passing of a

recent satisfactory course on the type (or types in the group in the case of an

application in respect of a group) for which application is made, may be

accepted, except that for types of engines of 1 500 kW or more, the applicant’s

experience must have been on types of approximately comparable power.

(2) Where an application is made for the extension to cover an engine of

appreciably simpler design and classified in a different group to that or those

for which the licence is already valid, the Director may reduce the six-month

qualifying period required above to suit the circumstances of the case.

7. Category D (engines): Issue or addition of Category D

(1) An applicant for the issuing of a licence in Category D or for the addition of

Category D to an existing licence, for the certification of the repair and

overhaul of engines must have had the experience, appropriate to the type

for which application is made, shown in the following table:

Applications relating to

airframes will be

accepted for the

following

Total aeronautical

engineering

experience

Experience in

column 2 must

include periods of

general practical

maintenance and

inspection solely of

airframes prior to

flight, totalling

Experience in column 3

must include periods of

practical maintenance and

inspection prior to flight on

the type for which

application is made (or a

type of similar charac-

teristics with satisfactory

experience on the type),

totalling

Without

training

3 years

With training

2 years

Without

training

12 months

With training

6 months

With or without training

6 months

All or any one of the types

classified under group 1

All or any one of the types

classified under group 2

All or any one of the types

classified under group 3

All or any one of the types

classified under group 4

No. 2958 49

Government Gazette 16 April 2003

(2) Where a licence is already valid in Category D for an engine classified

under group 03, then the experience requirements for the addition of Category

D to include the same engine will be half of those stated above.

8. Category D (engines): Extension of Category D

An applicant for the extension of Category D of his or her licence must have had six

months’ experience in the practical repair and overhaul of engines spent solely on

the type (or types in the group in the case of an application in respect of a group) for

which the extension is desired, unless the licence is already valid in Category D for

a type classified in the same group as that in which the type applied for is classified,

in which case evidence of recent satisfactory experience or the passing of a recent

satisfactory course on the type (or types in the group in the case of an application in

respect of a group) for which application is made, may be accepted.

9. Categories A and C (rotorcraft, including engines): Issue or addition of

Categories A and C

An applicant for the issuing of a licence in Categories A and C, or for the addition of

Categories A and C to an existing licence, for the certification of rotorcraft with a

maximum certificated mass of 5 700 kg or less, must have had three years’ aeronautical

engineering experience, including a minimum of one year of general practical

experience of the maintenance and inspection solely of rotorcraft (including their

engines) of which six months must have been on the practical maintenance and

inspection of the type or group for which application is made, or one of similar

characteristics, followed by the passing of a satisfactory course on the type.

10. Categories A and C (rotorcraft, including engines): Extension of Categories

A and C

An applicant for the extension of Categories A and C of a licence already valid for

the certification before flight of rotorcraft, to include a further type or types of

rotorcraft, must have had recent satisfactory experience or undergone a recent

satisfactory course on the type or types for which application is made.

11. Category X (automatic pilots): Issue or addition of Category X (automatic

pilots)

(1) An applicant for the issuing of a licence in Category X, or for the addition

of Category X to an existing licence, for the certification of the overhaul,

Applications relating to

airframes will be

accepted for the

following

Total aeronautical

engineering

experience

Experience in

column 2 must

include periods of

general practical

maintenance and

inspection solely of

airframes prior to

flight, totalling

Experience in column 3

must include periods of

practical maintenance and

inspection prior to flight on

the type for which

application is made (or a

type of similar charac-

teristics with satisfactory

experience on the type),

totalling

Without

training

3 years

With training

2 years

Without

training

12 months

With training

6 months

With or without training

6 months

All or any one of the types

classified under group 1

All or any one of the types

classified under group 2

All or any one of the types

classified under group 3

All or any one of the types

classified under group 4

50 Government Gazette 16 April 2003 No. 2958

repair, modification, calibration and installation in aircraft of automatic pilots

which do not operate on electronic principles, must have had at least three

years’ instrument engineering experience, including a minimum of nine

months on gyroscopic instruments, and three months general practical

experience of the repair, modification, calibration, installation and testing

of aircraft automatic pilots, of which at least half must have been recent

experience concentrated on the particular type of automatic pilot to which

the application relates.

(2) An applicant for the issuing of a licence in Category X, or for the addition

of Category X to an existing licence, for the certification of the installation

and in flight adjustment of electronic automatic pilots, must have had at

least three years’ electronic experience, and one and a half years’ general

practical experience of the repair, modification, calibration, installation and

testing of electronic automatic pilots, of which at least half must have been

recent experience concentrated on the particular type of automatic pilot to

which the application relates.

12. Category X (automatic pilots): Extension of Category X (automatic pilots)

An applicant for the extension of Category X of a licence already valid for the

certification of the repair and overhaul of automatic pilots, to include one further

type of automatic pilot similar to that for which the licence is already endorsed,

must have had at least four months’ recent practical experience of the particular

type and, in addition, a satisfactory course, except that where the type of automatic

pilot to which the application relates includes electronic principles, the applicant

must have had at least nine months’ practical experience of the particular types.

13. Category X (compasses): Issue or addition of Category X (compasses)

(1) An applicant for the issuing of a licence in Category X, or for the addition of

Category X to an existing licence, for the certification of the installation and

compensation of direct-reading magnetic compasses in aircraft, must have

had the appropriate experience referred to in CAR 43.02.18, in the installation

and compensation of direct-reading magnetic compasses in aircraft.

(2) An applicant for the issuing of a licence in Category X, or for the addition

of Category X to an existing licence, for the certification of the installation

and compensation of remote-reading compasses in aircraft, must have had

the appropriate experience referred to in CAR 43.02.18, in the installation

and compensation in aircraft of the type of remote-reading compass for

which the application is made.

14. Category X (compasses): Extension of Category X (compasses)

An applicant for an extension to Category X of a licence already valid for the

certification of the installation and compensation of compasses to include direct-

reading magnetic compasses or one further type of remote-reading compass, must

have had the appropriate experience referred to in CAR 43.02.18, of the type for

which the extension is required.

15. Category X (electrical equipment): Issue or addition of Category X (electrical

equipment)

An applicant for the issuing of a licence in Category X, or for the addition of

Category X to an existing licence, for the certification of the overhaul, repair or

modification of aircraft electrical equipment, including installations in aircraft

with main power supply systems, the nominal tension of which does not exceed

30 volts, must have had at least three years’ electrical engineering experience,

including a minimum of one and a half years of recent general practical experience

No. 2958 51

Government Gazette 16 April 2003

in the overhaul, repair and testing of aircraft electrical equipment, including recent

experience of the inspection and testing of electrical installations in aircraft:

Provided that three months’ recent general practical experience in the overhaul,

repair or modification of aircraft electrical equipment for engines classified in

groups 01, 02 and 03 will be acceptable for the issuing of a licence in Category X,

or the addition of Category X to an existing licence -

(a) If the applicant is the holder of an existing Class I licence in Category X

(ignition equipment); or

(b) If the applicant is the holder of an existing Class I licence in Category D for

any or all of the engines classified in groups 01, 02 and 03: Provided that

the privileges of any Category X licence issued or added to an existing

licence in accordance herewith shall be restricted to the certification of the

overhaul, repair or modification of electrical equipment fitted to the engine

type ratings entered under Category D of the existing licence.

16. Category X (ignition equipment): Issue or addition of Category X (ignition

equipment)

An applicant for the issuing of a licence in Category X, or for the addition of

Category X to an existing licence, for the certification of the overhaul, repair or

modification of aircraft engine ignition equipment, must have had at least three

years’ electrical engineering experience, including a minimum of one and a half

years of recent general practical experience in the overhaul, repair and testing of

all types of aircraft engine ignition equipment: Provided that three months’ recent

general practical experience in the overhaul, repair and modification and testing

of ignition equipment for engines classified in groups 01, 02 and 03 will be

acceptable for the issuing of a licence in Category X, or the addition of Category

X to an existing licence -

(a) if the applicant is the holder of an existing Class I licence in Category X

(electrical equipment); or

(b) if the applicant is the holder of an existing Class I licence in Category D for

any or all of the engines classified in groups 01, 02 and 03: Provided that

the privileges of any Category X licence issued or added to an existing

licence in accordance herewith with be restricted to the certification of the

overhaul, repair, modification and testing of ignition equipment fitted to

the engine type ratings entered under Category D of the existing licence.

17. Category X (instruments): Issue, addition or extension of Category X

(instruments)

(1) An applicant for the issuing of a licence in Category X, or for the addition

of Category X to an existing licence, for the certification of the overhaul,

repair or modification of aircraft and engine instruments, excluding

electrically operated instruments, must have had at least three years’

instrument engineering experience, including a minimum of one and a half

years of recent general practical experience in the overhaul, repair, calibration

and installation in aircraft of all types of physically and mechanically

operated aircraft and engine instruments.

(2) An applicant for the issuing of a licence in Category X, or for the addition

of Category X to an existing licence, for the certification of the overhaul,

repair or modification of aircraft and engine instruments, including

electrically operated instruments, or the extension of Category X

(instruments) to include the certification of the overhaul and repair of

electrically operated instruments must, in addition to the experience detailed

in subparagraph (1) above, either be a holder of a licence in Category X

(electrical equipment), together with at least six months’ recent practical

52 Government Gazette 16 April 2003 No. 2958

experience in the overhaul, repair or modification of electrically operated

aircraft and engine instruments, or have had at least one year of recent general

practical experience in the overhaul, repair or modification of electrically

operated aircraft and engine instruments.

18. Category X (variable-pitch propellers): Issue or addition of Category X

(variable-pitch propellers)

An applicant for the issuing of a licence in Category X, or for the addition of

Category X to an existing licence, for the certification of the overhaul, repair or

modification of variable-pitch propellers, must have had a minimum of one and a

half years of recent general practical experience in the overhaul and repair of

variable-pitch propellers, of which at least six months must have been spent on

the overhaul or repair of the type of propeller to which the application relates:

Provided that the Commissioner may agree to lesser periods of experience on

specified types of propellers of comparatively simple construction: Provided further

that six months’ experience in the overhaul and repair of the type of propeller to

which the application relates will be acceptable if the applicant, being the holder

of an existing aircraft maintenance engineers’ licence in Category B or D, applies

for the addition of Category X to such licence.

19. Category X (avionic equipment): Issue or addition of Category X (avionic

equipment)

An applicant for the issuing of a licence in Category X, or for the addition of

Category X to an existing licence, for the certification of the overhaul, repair,

modification and installation of avionic equipment or of avionic equipment

employing pulse techniques, must have had at least three years’ electronic

engineering experience, including a minimum of one and a half years of recent

general practical experience in the overhaul, repair, calibration and installation in

aircraft of all types of avionic equipment to which the application relates.

20. Category X (avionic equipment): Extension of Category X (avionic equipment)

An applicant for the extension of Category X of a licence already valid for the

certification of the overhaul, repair, modification and installation of avionic

equipment or of avionic equipment employing pulse techniques to include the

type of avionics equipment to which the application relates, must, in addition to

the experience detailed in paragraph 19 above, have had at least one year of recent

general practical experience in the overhaul, repair or modification of avionic

equipment of the type concerned.

21. Category X (aircraft welding): Issue or addition of Category X (aircraft

welding)

(Reserved.)

22. Category X (aircraft welding): Extension of Category X (aircraft welding)

(Reserved.)

23. Category W: Issue or addition of Category W

(Reserved.)

24. Category W: Extension of Category W

(Reserved.)

No. 2958 53

Government Gazette 16 April 2003

66.02.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

(1) The form referred to in CAR 66.02.5(1)(a), in which application must be

made for the issuing of a Class II licence with a Category A rating, is

contained in Annexure C.

(2) The form referred to in CAR 66.02.5(2)(a), in which application must be

made for the amendment of a Class II licence with a Category A rating, is

contained in Annexure C.

66.02.6 ISSUING OF A LICENCE

1. Form of licence

The form referred to in CAR 66.02.6(2), on which a Class II licence with a Category

A rating is issued, is contained in Annexure D.

66.02.9 RENEWAL OF LICENCE

1. Form of application

The form referred to in CAR 66.02.9(2)(a), in which application must be made for the

renewal of a Class II licence with a Category A rating, is contained in Annexure C.

2. Form of application

The form referred to in CAR 66.02.9(4), in which a Class II licence with a Category

A rating is renewed, is contained in Annexure D.

66.02.10 REISSUE

1. Form of application

The form referred to in CAR 66.02.10(3), in which application must be made for the

reissuing of a Class II licence with a Category A rating, is contained in Annexure C.

66.03.2 TRAINING

1. Training standards

The form referred to in CAR 66.03.2, is the appropriate training set out in TS 66.02.2.

66.03.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

The requirements for the written examination referred to in CAR 66.03.3(1), are

the appropriate requirements set out in TS 66.02.3.

2. Retesting after failure

The periods for retesting after failure referred to in CAR 66.03.3(2), are the periods

specified in paragraph 3 of TS 66.02.3.

66.03.4 EXPERIENCE

1. Requirements

The experience requirements referred to in CAR 66.03.4, are the appropriate

experience requirements set out in TS 66.02.4.

54 Government Gazette 16 April 2003 No. 2958

66.03.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

(1) The form referred to in CAR 66.03.5(1)(a), in which application must be

made for the issuing of a Class II licence with a Category C rating, is

contained in Annexure C.

(2) The form referred to in CAR 66.04.5(2)(a), in which application must be

made for the amendment of a Class II licence with a Category W rating, is

contained in Annexure C.

66.03.6 ISSUING OF LICENCE

1. Form of licence

The form referred to in CAR 66.03.6(2), on which a Class II licence with a Category

C rating is issued, is contained in Annexure D.

66.03.9 RENEWAL OF LICENCE

1. Form of application

The form referred to in CAR 66.03.6(2), on which a Class II licence with a Category

C rating is issued, is contained in Annexure D.

2. Form of renewal

The form referred to in CAR 66.03.9(4), in which a Class II licence with a Category

C rating is renewed, is contained in Annexuere D.

66.03.10 REISSUE

1. Form of application

The form referred to in CAR 66.03.10(3), in which application must be made for

the reissuing of a Class II licence with a Category C rating, is contained in Annexure

66.04.2 TRAINING

1. Training standards

The form referredto in CAR 66.04.2, is the appropriate training set out in TS

66.02.2.

66.04.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

The requirements for the written examination referred to in CAR 66.04.3(1), are

the appropriate requirements set out in TS 66.02.3.

2. Retesting after failure

The periods for retesting after failure referred to in CAR 66.04.3(2), are the periods

specified in paragraph 3 of TS 66.02.3.

No. 2958 55

Government Gazette 16 April 2003

66.04.4 EXPERIENCE

1. Requirements

The experience requirements referred to in CAR 66.04.4, are the appropriate

requirements set out in TS 66.02.4.

66.04.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

(1) The form referred to in CAR 66.04.5(1)(a), in which application must be

made for the issuing of a Class II licence with a Category W rating, is

contained in Annexure C.

(2) The form referred to in CAR 66.04.5(2)(a), in which application must be

made for the amendment of a Class II licence with a Category W rating, is

contained in Annexure C.

66.04.6 ISSUING OF LICENCE

1. Form of licence

The form referred to in CAR 66.04.6(2), on which a Class II licence with a Category

W rating is issued, is contained in Annexure D.

66.04.9 RENEWAL OF LICENCE

1. Form of application

The form referred to in CAR 66.04.9(2)(a), in which application must be made for

the renewal of a Class II licence with a Category W rating, is contained in Annexure

2. Form of renewal

The form referred to in CAR 66.04.9(4), in which a Class II licence with a Category

W rating is renewed, is contained in Annexure D.

66.04.10 REISSUE

1. Form of application

The form referred to in CAR 66.04.10(3), in which application must be made for

the reissuing of a Class II licence with a Category W rating, is contained in Annexure

66.05.2 TRAINING

1. Training standards

The training referred to in CAr 66.05.2, is the appropriate training set out in TS

66.02.2.

66.05.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

The requirements for the written examination referred to in CAR 66.05.3(1), are

the appropriate requirements set out in TS 66.02.3.

56 Government Gazette 16 April 2003 No. 2958

2. Retesting after failure

The periods for retesting after failure referred to in CAR 66.05.3(2), are the periods

specified in paragraph 3 of TS 66.02.3.

66.05.4 EXPERIENCE

1. Requirements

The experience requirements referred to in CAR 66.05.4, are the appropriate

experience requirements set out in TS 66.02.4.

66.05.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

(1) The form referred to in CAR 66.05.5(1)(a), in which application must be

made for the issuing of a Class I licence with a Category B rating, is contained

in Annexure C.

(2) The form referred to in CAR 66.05.5(2)(a), in which application must be

made for the amendment of a Class I licence with a Category B rating, is

contained in Annexure C.

66.05.6 ISSUING OF LICENCE

1. Form of licence

The form referred to in CAr 66.05.6(2), on which a Class I licence with a Category

B rating is issued, is contained in Annexure D.

66.05.9 RENEWAL OF LICENCE

1. Form of application

The form referred to in CAR 66.05.9(2)(a), in which application must be made for

the renewal of a Class I licence with a Category B rating, is contained in Annexure

2. Form of renewal

The form referred to in CAR 66.05.9(4), in which a Class I licence with a Category

B rating is renewed, is contained in Annexure D.

66.05.10 REISSUE

1. Form of application

The form referred to in CAR 66.05.10(3), in which application must be made for

the reissuing of a Class I licence with a Category B rating, is contained in Annexure

66.06.2 TRAINING

1. Training standards

The training referred to in CAR 66.06.2, is the appropriate training set out in

TS 66.02.2.

No. 2958 57

Government Gazette 16 April 2003

66.06.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

The requirements for the written examination referred to in CAR 66.06.3(1), are

the appropriate requirements set out in TS 66.02.3.

2. Retesting after failure

The periods for retesting after failure referred to in CAR 66.06.3(2), are the periods

specified in paragraph 3 of TS 66.02.3.

66.06.4 EXPERIENCE

1. Requirements

The experience requirements referred to in CAR 66.0, are the appropriate

requirements set out in TS 66.02.4.

66.06.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of application

(1) The form referred to in CAR 66.06.5(1)(a), in which application must be

made for the issuing of a Class I licence with a Category D rating, is contained

in Annexure C.

(2) The form referred to in CAR 66.06.5(2)(a), in which application must be

made for the amendment of a Class I licence with a Category D rating, is

contained in Annexure C.

66.06.6 ISSUING OF LICENCE

1. Form of licence

The form referred to in CAR 66.06.6(2), on which a Class I licence with a Category

D rating is issued, is contained in Annexure D.

66.06.9 RENEWAL OF LICENCE

1. Form of application

The form referred to in CAR 66.06.9(2)(a), in which application must be made

for the renewal of a Class I licence with a Category D rating, is contained in

Annexure C.

2. Form of renewal

The form referred to in CAR 66.06.9(4), in which a Class I licence with a Category

D rating is renewed, is contained in Annexure D.

66.06.10 REISSUE

1. Form of application

The form referred to in CAR 66.06.10(3), in which application must be made for

the reissuing of a Class I licence with a Category D rating, is contained in Annexure

66.07.2 TRAINING

1. Training standards

The training referred to in CAR 66.07.2, is the appropriate training set out in

TS 66.02.2.

58 Government Gazette 16 April 2003 No. 2958

66.07.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Form of licence

The form referred to in CAR 66.06.6(2), on which a Class I licence with a Category

D rating is issued, is contained in Annexure D.

2. Retesting after failure

The periods for retesting after failure referred to in CAR 66.07.3(2), are the periods

specified in paragraph 3 of TS 66.02.3.

66.07.4 EXPERIENCE

1. Requirements

The experience requirements referred to in CAR 66.07.4, are the appropriate

experience requirements set out in TS 66.02.4.

66.07.5 APPLICATION FOR LICENCE OR AMENDMENT THEREOF

1. Form of licence

(1) The form referred to in CAR 55.07.5(1)(a), in which application must be

made for the issuing of a Class I licence with a Category X rating, is contained

in Annexure C.

(2) The form referred to in CAR 66.07.5(2)(a), in which application must be

made for the amendment of a Class I licence with a Category X rating, is

contained in Annexure C.

66.07.6 ISSUING OF LICENCE

1. Form of licence

The form referred to in CAR 66.07.6(2), on which a Class I licence with a Category

X rating is issued, is contained in Annexure D.

66.07.9 RENEWAL OF LICENCE

1. Form of licence

The form referred to in CAR 66.07.9(2)(a), in which application must be made for

the renewal of a Class I licence with a Category X rating, is contained in Annexure

2. Form of renewal

The form referred to in CAR 66.07.9(4), in which a Class I licence with a Category

X rating is renewed, is contained in Annexure D.

66.07.10 REISSUE

1. Form of application

The form referred to in CAR 66.07.10(3), in which application must be made for

the reissuing of a Class licence with a Category X rating, is contained in Annexure

66.08.2 TRAINING

1. Training standards

(Reserved).

No. 2958 59

Government Gazette 16 April 2003

66.08.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

(Reserved).

2. Retesting after failure

(Reserved).

66.08.4 EXPERIENCE

1. Requirements

(Reserved).

66.08.5 APPLICATION FOR GRADE ONE AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

The form referred to in CAR 66.08.5(a), in which application must be made for

the issuing of a Grade One aircraft maintenance instructor rating, is contained in

Annexure E.

66.08.6 ISSUING OF GRADE ONE AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of rating

The form referred to in CAR 66.08.6(2), on which a Grade One aircraft maintenance

instructor rating is issued, is contained in Annexure F.

66.08.9 RENEWAL OF GRADE ONE AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

The form referred to in CAR 66.08.9(2), in which application must be made for

the renewal of a Grade One Aircraft maintenance instructor rating, is contained in

Annexure E.

2. Form of renewal

The form referred to in CAR 66.08.9(4), in which a Grade One aircraft maintenance

instructor rating is renewed, is contained in Annexure F.

66.09.2 TRAINING

1. Training standards

(Reserved.)

66.09.3 THEORETICAL KNOWLEDGE EXAMINATION

1. Written examination requirements

(Reserved.)

2. Retesting after failure

(Reserved.)

66.09.4 EXPERIENCE

1. Requirements

(Reserved.)

60 Government Gazette 16 April 2003 No. 2958

66.09.5 APPLICATION FOR GRADE TWO AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

The form referred to in CAR 66.09.5(a), in which application must be made for

the issuing of a Grade Two aircraft maintenance instructor rating, is contained in

Annexure E.

66.09.6 ISSUING OF GRADE TWO AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of rating

The form referred to in CAR 66.09.6(2), on which a Grade Two aircraft

maintenance instructor rating is issued, is contained in Annexure F.

66.09.39 RENEWAL OF GRADE TWO AIRCRAFT MAINTENANCE

INSTRUCTOR RATING

1. Form of application

The form referred to in CAR 66.09.9(2), in which application must be made for

the renewal of a Grade Two aircraft maintenance instructor rating, is contained in

Annexure E.

2. Form of renewal

The form referred to in CAR 66.09.9(4), in which a Grade Two aircraft maintenance

instructor rating is renewed, is contained in Annexure F.

SSCHEDULE 1: WELDING REQUIREMENTS

1. WELDING TESTS

1.1 General

(1) Welding ratings will be required for -

(a) oxy-acetylene;

(b) inert gas shielded arc;

(d) atomic hydrogen;

(e) metal arc; and

(f) carbon welding processes,

for the following groups or metallic materials:

Group 1 - Aluminium alloys

Group 2 - Magnesium alloys

Group 3 - Carbon steels

Group 4 - Corrosion and heat-resisting steels

Group 5 - Nockel base and cobalt base alloys

Group 6 - Titanium alloys

Group 7 - Copper base alloys

(2) Welding ratings will be limited to those types of materials or material groups

and welding processes on which the applicant has demonstrated his or her

welding ability by means of the tests referred to hereunder.

(3) Where a welder is employed by an approved aircraft maintenance

organisation, the responsibility of maintaining a satisfactory standard of

No. 2958 61

Government Gazette 16 April 2003

competency of the welder concerned will be entrusted to the organisation

which must use the procedure for establishing such competency as set out

in this Schedule.

1.2 Welding test for initial ratings

(1) Each welder will be required to make test pieces and at his or her option,

prepare test specimens appropriate to the ratings required. Such test pieces

and test specimens must conform to the standards shown in Figures 1, 2 and

3 and 4. For test pieces shown in Figures 2 and 3, a 25% variation in tube

diameter will be permitted and tubular material wall thicknesses must be

within 20% of the range specified.

(2) Applicants must use for their tests, piece materials of the same specifications

or the nearest equivalent as those they will be welding on aircraft, but if this

provides undue difficulty, similar materials will be acceptable if two control

specimens of the parent material conforming to the tensile test specimen of

Figure 1, are submitted.

(3) The test pieces required for the various groups of materials are as follows:

(a) For group 1 and 2 materials, the test pieces shown in Figures 1 and 4.

(b) For group 3 and 4 materials, the test pieces shown in Figure 1, for

plasma arc welding process, and Figures 2 and 3 for oxy-axetylene

and inert gas shielded arc welding processes.

(d) Where the applicant desires a welding rating to be limited to certain

types of work, e.g. tubular repairs only, such applicable test pieces as

shown in Figures 1,2, 3 or 4.

(e) Figure 3 does not apply in respect of the plasma arc welding process.

(4) The welding of test pieces must be done by each welder in accordance with

the requirements prescribed in paragraph 2 and under the supervision of a

person approved for the purpose by the Commissioner. If the welder elects

to have the test specimens prepared before these are submitted to the test

laboratory for examination, such preparation must also be under the control

of the supervisor.

(5) The welds of test pieces and test specimens may not be hammered, dressed

or sand blasted.

(6) The supply of welding equipment and test materials is the responsibility of

the welder concerned.

(7) Only one set of test pieces and test specimens is permitted at a time for each

rating of each welder.

(8) A welder may abandon any test at any stage if he or she is dissatisfied with

the results. In such cases and in the case of failure to pass the initial test, he

or she will only be permitted to do further tests after a period of 30 days

during which period he or she must obtain additional welding experience.

If a welder fails the second renewal test, all the prescribed tests for that

group of metallic material will have to be satisfactorily completed after a

further period of 30 days.

(9) A welder only becomes qualified for a material or material group using the

appropriate welding process on the date that the approved examiner indicates

in writing that the test concerned was satisfactory.

62 Government Gazette 16 April 2003 No. 2958

1.3 Welding tests for renewal

(1) Each welder will normally be required to do a test piece for each rating for

which renewal is required and, at his or her option, prepare the necessary

test specimens in accordance with Figure 1. For such tests the provisions of

paragraphs 1.2(1) and 1.2(5) and (9) inclusive apply.

(2) A welder may abandon any renewal test at any stage if he or she is dissatisfied

with the results.

(3) In cases where the privileges of a rating have lapsed for more than 6 months,

the complete test must be satisfactorily completed before the privileges of

the rating concerned are again exercised.

1.4 Examination of test pieces and test specimens

Examination of test pieces and test specimens must be done in accordance with

the following requirements:

(1) General

All welds must be examined for contour, width, reinforcement, penetration,

bonding, porosity, non-metallic inclusions and excessive carburisation cracks.

Where excessive penetration occurs, the test piece or specimen will be rejected,

but isolated excrescences on the underside of a weld are acceptable provided

the weld is free from cavities, oxide films and other defects.

(2) Tensile tests

(a) Tensile test specimens must be tested to destruction in direct tension.

The ultimate tensile stress (calculated on the minimum area of cross

section of the specimen) and the position of the break must be

recorded.

(b) A break through the weld of a sheet-to-sheet but welded test specimen

will be considered satisfactory only if the ultimate tensile stress at

which the break occurs, is to the acceptable value for the type of

material concerned.

bending. Suitable pins passing through the top and bottom cross tubes

and shackles should be used on the tensile test machine for this

purpose. Where the specimen fails by the weld metal peeling away

from the surface of one of the component parts, the weld will not be

considered satisfactory even though the required ultimate tensile stress

may have been reached.

(d) Bend tests

(3) Bend tests

(a) Bend test specimens must be bent so that the weld is along the axis of

the bend with the base of the weld “V” on the inner side of the bend.

To facilitate close contact of the specimen to the bar about which it is

bent, the side of the specimen remote from the weld face should be

dressed by filling or grinding until any excrescences are level with

the parent metal. The edges of the specimen in the vicinity of the

weld should be given a reasonable radius. A backing ingot or slab of

lead may be used if desired in accomplishing bends of test specimens.

Specimens will be considered satisfactory if they withstand the bend

tests without showing cracks visible to the naked eye.

No. 2958 63

Government Gazette 16 April 2003

(b) The angles and radii of bends for the various materials involved must

be as shown in the following table:

SCHEDULE 1: WELDING REQUIREMENTS

* Austentic steel bend specimens in the “as welded” condition must be given the

“weld decay” pickling test, prescribed by the specification for the parent metal,

prior to bending. The formula for the weld decay solution is: 222 grams of copper

sulphate, 106.5 ml of sulphuric acid and add water to make a total of 2 liters.

(4) Microscopic examinations

(a) Micro specimens must be examined microscopically in the unetched

and etched conditions for satisfactory fusion and adequate penetration

and for freedom from carburisation or decarburisation, cracks,

excessive cavitation and harmful inclusions.

(b) Examination for intergranular oxide films must be done with the

specimen in the unetched condition as the presence of such films is

difficult to detect in the etched condition. If the area of intergranular

oxide is only very slight and satisfactory results are obtained from

mechanical testing of the related test specimens, further sections of

the weld should be micro examined before a decision is reached.

will normally be accepted, is that revealed by a line of oxide extending

from the root for a distance not greater than one third of the distance

between the root and the toe of the weld provided that the amount of

weld material used is adequate to give a throat thickness of not less

than the thickness of the sheets or tubes used for test pieces.

(d) For fillet welds at acute angles e.g. 30º in Figure 3, complete penetration

in the root of the weld may be difficult to achieve without excessive

melting of the parent metal. The presence of a fairly large cavity or

corresponding lack of fusion will be acceptable at the apex of such

welds provided there is a bridge of weld material of a reasonable throat

depth showing satisfactory fusion to the parent metal.

(5) Assessment of welded pieces

Final assessment of the weld must be based on consideration of the sample

weld as a whole, including the results obtained by visual inspection,

microscopical examination, and where applicable, radiographic examination

and mechanical testing. If any doubt exists regarding the quality of the weld,

or any defect revealed is thought to be of a local character, further sections

may be examined and final assessment must be based on all the specimens

examined.

Material Angle of bend Radius of bend

Aliminium alloys

Magnesium alloys

Carbon and low alloy steels

Austenitic steels *

Boron containing steels

Titanium

All other materials

180º

90º

180º

5 times nominal thickness of test piece

10 times nominal thickness of test piece

2 times nominal thickness of test piece

3 times nominal thickness of test piece

5 times nominal thickness of test piece

2 times nominal thickness of test piece

64 Government Gazette 16 April 2003 No. 2958

2. METHODS OF PREPARATION OF WELDED TEST PIECES AND TEST

SPECIMENS

The preparation of welded test pieces for the groups of materials must be as follows:

2.1 Figure 1: Sheet to sheet butt weld

(1) Edges of sheets to be welded must be chamfered when 16 I.S.W.G or thicker

material is used except for aluminium and aluminium alloys, in which case

edge preparation is not necessary for material thinner than 12 I.S.W.G.

(2) Welds must be performed by forward welding from one side only using

correct flux and filler rod.

2.2 Figure 2: Sheet to tube weld

(1) The centre of each end plate must be drilled with a 12 mm diameter hole

prior to welding. The ends of the tube need not be chamfered for material

thinner than 16 I.S.W.G.

(2) End plates may be positioned wit tack welds and the first to be welded must

be done with the end plate flat on the bench and the tube in the vertical

position; this weld must be completed by working around the test piece.

The second end plate must be welded to the tube with the tube in the

horizontal position and not moved during the process of completing the

weld; this weld must be completed by working under and over the test piece.

(3) The specimen for microscopic examination must be cut from one end of the

test piece as indicated in Figure 2. The remainder of the test pieces must be

preserved and submitted for any further examination which may be

considered necessary should the results of the macroscopic examination

raise any doubt.

2.3 Figure 3: Tube to tube weld

(1) After preparation of the tubes for welding these must be assembled in a jig

and tack welded.

(2) The assembly must then be removed from the jig and mounted in a vertical

position with the longest tube (365 mm) at the lowest point. The assembly

may not be moved from this position during the process of completing the

welds.

(3) The uppermost joint formed by the short horizontal, vertical and diagonal

tubes must be welded by the “overhead” welding technique and the remaining

joints completed by working around the test piece.

2.4 Figure 4: Block build-up

Do a build-up operation of the U cut-out on the machined block, by multiweld

runs, to a level slightly above that of block surface.

No. 2958 65

Government Gazette 16 April 2003

SCHEDULE 1: WELDING REQUIREMENTS

FIGURE 1

SHEET TO SHEET BUTT WELD

Notes:

1 ISWG = Imperial or British Standard wire gauge.

2 Enough discard so that the beginning and end of the run is not included in the test

specimen.

FIGURE 2

SHEET TO TUBE WELD

Notes:

1. A variation of up to 25% in tube diameter will be permitted for tubular material

but wall thickness of tubes must be within the dimensions specified.

66 Government Gazette 16 April 2003 No. 2958

2. For Oxy-acetylene welding use tube 20 ISWG (0,889 - 1,016 mm) and end plates

16 ISWG (1,626 - 1,676 mm).

3. For ARC welding use tube 16 ISWG (1,626 - 1,676 mm) and end plates 16 ISWG

(1,626 - 1,676 mm).

FIGURE 3

TUBE TO TUBE WELD

Notes:

1. A variation of up to 25% in tube diameter will be permitted for tubular material

but wall thickness of tubes must be within the dimensions specified.

2. For ARC welding, substitute 14 ISWG (1,829 - 2,108 ,,) for 17 ISWG (1,422 -

1,473 mm) and 16 ISWG (1,626 - 1,676 mm) for 20 ISWG (9,899 - 1,016 mm).

FIGURE 4

BLOCK BUILD-UP

NAMCATS 137 AMEL Proposed Gaz 2958

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