6.1 Aircraft Materials — Ferrous
Characteristics, properties and identification of common alloy steels used in aircraft;
Heat treatment and application of alloy steels;
Testing of ferrous materials for hardness, tensile strength, fatigue strength and impact resistance.
6.2 Aircraft Materials — Non-Ferrous
Characteristics, properties and identification of common non-ferrous materials used in aircraft;
Heat treatment and application of non-ferrous materials;
Testing of non-ferrous material for hardness, tensile strength, fatigue strength and impact resistance.
6.3 Aircraft Materials — Composite and Non-Metallic
6.3.1 Composite and non-metallic other than wood and fabric
Characteristics, properties and identification of common composite and non-metallic materials, other than wood, used in aircraft;
Sealant and bonding agents.
The detection of defects/deterioration in composite and non-metallic material.
Repair of composite and non-metallic material.
6.3.2 Wooden structures
Construction methods of wooden airframe structures;
Characteristics, properties and types of wood and glue used in aeroplanes;
Preservation and maintenance of wooden structure;
Types of defects in wood material and wooden structures;
The detection of defects in wooden structure;
Repair of wooden structure.
6.3.3 Fabric covering
Characteristics, properties and types of fabrics used in aeroplanes;
Inspections methods for fabric;
Types of defects in fabric;
Repair of fabric covering.
6.4 Corrosion
Chemical fundamentals;
Formation by, galvanic action process, microbiological, stress;
Types of corrosion and their identification;
Causes of corrosion;
Material types, susceptibility to corrosion.
6.5 Fasteners
6.5.1 Screw threads
Screw nomenclature;
Thread forms, dimensions and tolerances for standard threads used in aircraft;
Measuring screw threads;
6.5.2 Bolts, studs and screws
Bolt types: specification, identification and marking of aircraft bolts, international standards;
Nuts: self locking, anchor, standard types;
Machine screws: aircraft specifications;
Studs: types and uses, insertion and removal;
Self tapping screws, dowels.
6.5.3 Locking devices 2 2 2
Tab and spring washers, locking plates, split pins, pal-nuts, wire locking, quick release fasteners, keys, circlips, cotter pins.
6.5.4 Aircraft rivets
Types of solid and blind rivets: specifications and identification, heat treatment.
6.6 Pipes and Unions
Identification of, and types of rigid and flexible pipes and their connectors used in aircraft;
Standard unions for aircraft hydraulic, fuel, oil, pneumatic and air system pipes.
6.7 Springs
Types of springs, materials, characteristics and applications.
6.8 Bearings
Purpose of bearings, loads, material, construction;
Types of bearings and their application.
6.9 Transmissions
Gear types and their application;
Gear ratios, reduction and multiplication gear systems, driven and driving gears, idler gears, mesh patterns;
Belts and pulleys, chains and sprockets.
6.10 Control Cables
Types of cables;
End fittings, turnbuckles and compensation devices;
Pulleys and cable system components;
Bowden cables;
Aircraft flexible control systems.
6.11 Electrical Cables and Connectors
Cable types, construction and characteristics;
High tension and co-axial cables;
Connector types, pins, plugs, sockets, insulators, current and voltage rating, coupling, identification codes.