Module 07A B1. Maintenance Practices
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7.1 Safety Precautions-Aircraft and Workshop
- Aspects of safe working practices including precautions to take when working with electricity, gases especially oxygen, oils and chemicals.
- Also, instruction in the remedial action to be taken in the event of a fire or another accident with one or more of these hazards including knowledge on extinguishing agents.
7.2 Workshop Practices
- Care of tools, control of tools, use of workshop materials;
- Dimensions, allowances and tolerances, standards of workmanship;
- Calibration of tools and equipment, calibration standards
7.3 Tools
- 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;
7.4 Avionic General Test Equipment
- Operation, function and use of avionic general test equipment
7.5 Engineering Drawings, Diagrams and Standards
- Drawing types and diagrams, their symbols, dimensions, tolerances and projections;
- Identifying 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
7.6 Fits and Clearances
- Drill sizes for bolt holes, classes of fits;
- Common system of 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.
7.7 Electrical Wiring Interconnection System (EWIS)
- Continuity, insulation and bonding techniques and testing;
- Use of crimp tools: hand and hydraulic operated;
- Testing of crimp joints;
- Connector pin removal and insertion;
- Co-axial 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.
- EWIS installations, inspection, repair, maintenance and cleanliness standards.
7.8 Riveting
- Riveted joints, rivet spacing and pitch;
- Tools used for riveting and dimpling;
- Inspection of riveted joints.
7.9 Pipes and Hoses
- Bending and belling/flaring aircraft pipes;
- Inspection and testing of aircraft pipes and hoses;
- Installation and clamping of pipes.
7.10 Springs
- Inspection and testing of springs
7.11 Bearings
- Testing, cleaning and inspection of bearings;
- Lubrication requirements of bearings;
- Defects in bearings and their causes.
7.12 Transmissions
- 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
- 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
- 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
- Bonding practices;
- Environmental conditions
- Inspection methods
7.15 Welding, Brazing, Soldering and Bonding
(a)
- Soldering methods; inspection of soldered joints
(b)
- Welding and brazing methods;
- Inspection of welded and brazed joints;
- Bonding methods and inspection of bonded joints.
7.16 Aircraft Weight and Balance
(a)
- Centre of Gravity/Balance limits calculation: use of relevant documents
(b)
- Preparation of aircraft for weighing;
- Aircraft weighing;
7.17 Aircraft Handling and Storage
- 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.
- Corrosion removal, assessment and reprotection.
(b)
- General repair methods, Structural Repair Manual;
- Ageing, fatigue and corrosion control programmes;
(c)
- Non destructive inspection techniques including, penetrant,
- radiographic, eddy current, ultrasonic and boroscope methods.
(d)
- Disassembly and re-assembly techniques
(e)
- Trouble shooting techniques
7.19 Abnormal Events
(a)
- Inspections following lightning strikes and HIRF penetration.
(b)
- Inspections following abnormal events such as heavy landings and flight through turbulence
7.20 Maintenance Procedures
- 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