
Module-07
Maintenance Practices
Ttal MCQ Cat. B1 and B3: 80 multiple-choice and 2 essay questions.
7.1 Safety precautions — aircraft and workshop [Level-3,Exam B1 ,No. of Questions-4]
Aspects of safe working practices including precautions to be taken when working with electricity, gases (especially oxygen), oils, and chemicals. Fuel tank safety and fuel tank entry procedures and precautions. Awareness and
precautions regarding aircraft equipped with ballistic recovery systems. Also, instructions for the remedial action to be taken in the event of a fire or another accident with one or more of these hazards, including information on fire-
extinguishing agents.
7.2 Workshop practices [Level-3,Exam B1 ,No. of Questions-4]
Care of tools, control of tools, use of workshop materials; Dimensions, allowances and tolerances, workmanship standards; Calibration of tools and equipment, calibration standards.
Sub-Module 7.3 Tools [Level-1, Exam B1 ,No. of Questions-6]
Common hand-tool types;
Common power-tool types;
Operation and use of precision-measuring tools;
Lubrication equipment and methods;
Operation, function, and use of electrical general test equipment.
Sub-Module 7.4 (Reserved)
Operation of data buses in aircraft systems, including knowledge of ARINC and other
specifications.Aircraft Network / Ethernet.
Sub-Module 7.5 Engineering drawings, diagrams, and standards [Level-2, Exam B1 ,No. of Questions-6]Drawing types and diagrams, their symbols, dimensions, tolerances and projections;
Identification of title block information;
Microfilm, microfiche, and computerised presentations;
Specification 100 of the Air Transport Association (ATA) of America;
Aeronautical and other applicable standards including ISO, AN, MS, NAS and MIL;
Wiring diagrams and schematic diagrams.
Sub-Module 7.6 Fits and clearances [Level-2, Exam B1 ,No. of Questions-5]
Drill sizes for bolt holes, classes of fits;
Common system for fits and clearances;
Schedule of fits and clearances for aircraft and engines;
Limits for bow, twist and wear;
Standard methods for checking shafts, bearings, and other parts.
Sub-Module 7.7 Electrical wiring interconnection system (EWIS) [Level-3, Exam B1 X, No. of Questions-4]
Continuity, insulation and bonding techniques and testing;
Use of crimp tools: hand and hydraulic operated;
Testing of crimp joints;
Connector pin removal and insertion;
Coaxial cables: testing and installation precautions;
Identification of wire types, their inspection criteria and damage tolerance;
Wiring protection techniques: cable looming and loom support, cable clamps,
protective sleeving techniques including heat shrink wrapping, shielding;
High-Intensity Radiated Fields (HIRF) and protection principles;
Soldering of electrical wires, EWIS installations, inspection, repair, maintenance, and
cleanliness standards.
Sub-Module 7.8 Riveting 1 2 – [Level-2, Exam B1 X, No. of Questions-3]
Riveted joints, rivet spacing and pitch;
Tools used for riveting and dimpling;
Inspection of riveted joints.
Operation and use of encoders and decoders; Function of encoder types; Uses of medium, large and very large scale integration.
Sub-Module 7.9 Pipes and hoses [Level-2, Exam B1 X, No. of Questions-3]
Bending and belling/flaring aircraft pipes;
Inspection and testing of aircraft pipes and hoses;
Installation and clamping of pipes.
Sub-Module 10 - Spring Level-2, Exam B1 ,No. of Questions-1]
Inspection and testing of springs.
7.11 Bearings 1 2 – Level-2, Exam B1 ,No. of Questions-3]
Testing, cleaning and inspection of bearings;
Lubrication requirements for bearings;
Defects in bearings and their causes.
7.12 Transmissions 1 2 – Level-2, Exam B1 ,No. of Questions-3]
Inspection of gears, backlash;
Inspection of belts and pulleys, chains and sprockets;
Inspection of screw jacks, lever devices, push–pull rod systems.
7.13 Control cables 1 2 – Level-2, Exam B1 ,No. of Questions-3]
Swaging of end fittings;
Inspection and testing of control cables;
Bowden cables; aircraft flexible control systems.
7.14 Material handling
7.14.1 Sheet metal – 2 – Level-2, Exam B1 ,No. of Questions-2]
Marking out and calculation of bend allowance;
Sheet metal working, including bending and forming;
Inspection of sheet metal work.
7.14.2 Composite and non-metallic – 2 – Level-2, Exam B1 ,No. of Questions-2]
Bonding practices;
Environmental conditions;
Inspection methods.
7.14.3 Additive manufacturing 1 1 1 Level-1, Exam B1 ,No. of Questions-4]
Common additive manufacturing techniques and their influence on the
mechanical properties of the finished part;
Inspection of additive manufactured parts and common production failures.
7.15 (Reserved)
7.16 Aircraft weight and balance
(a) Calculation of centre-of-gravity / Level-2, Exam B1 ,No. of Questions-2]
balance limits: use of relevant documents. – 2 2
(b) Preparation of aircraft for weighing; Level-2, Exam B1 ,No. of Questions-1]
Aircraft weighing.
– 2 –
7.17 Aircraft handling and storage 2 2 2 Level-2, Exam B1 ,No. of Questions-5]
Aircraft taxiing/towing and associated safety precautions;
Aircraft jacking, chocking, securing and associated safety precautions;
Aircraft storage methods;
Refuelling/defuelling procedures;
De-icing/anti-icing procedures;
Electrical, hydraulic, and pneumatic ground supplies;
Effects of environmental conditions on aircraft handling and operation.
7.18 Disassembly, inspection, repair, and assembly techniques
(a) Types of defects and visual inspection techniques; Level-3, Exam B1 ,No. of Questions-2]
Corrosion removal, assessment and reprotection;
2 3 3
(b) General repair methods, structural repair manual; Level-3, Exam B1 ,No. of Questions-2]
Ageing, fatigue, and corrosion control programmes;
– 2 –
(c) Non-destructive inspection techniques including penetrant, Level-2, Exam B1 ,No. of Questions-1]
radiographic,
eddy current, magnetic particle, ultrasonic and borescope inspections;
including practical training in colour contrast penetrant inspection;
– 2 1
(d) Disassembly and reassembly techniques; 2 2 2 Level-2, Exam B1 ,No. of Questions-1]
(e) Troubleshooting techniques. – 2 2 Level-2, Exam B1 ,No. of Questions-1]
7.19 Abnormal events
(a) Inspections following lightning strikes and HIRF penetration; 2 2 2Level-2, Exam B1 ,No. of Questions-1]
(b) Inspections following abnormal events such as heavy landings Level-2, Exam B1 ,No. of Questions-1]
and flight
through turbulence.
2 2 –
7.20 Maintenance procedures 1 2 2 Level-2, Exam B1 ,No. of Questions-6]
Maintenance planning;
Modification procedures;
Stores procedures;
Certification/release procedures;
Interface with aircraft operation;
Maintenance Inspection / Quality Control / Quality Assurance;
Additional maintenance procedures;
Control of life-limited components.
7.21 Documentation and communication 1 2 2 Level-2, Exam B1 ,No. of Questions-4]
Documentation: elements and criteria for writing work reports, troubleshooting
reports, and shift handover instructions.
Communication: clear, comprehensive, and concise.
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