EASA 66 Module 6 - Materials and Hardware

An understanding of the materials and hardware used in aircraft maintenance is essential. EASA 66 Module 6 will enable the student to identify the different types of materials used as well as the hardware needed to maintain an aircraft.

  • 6.1 Aircraft Materials(Ferrous)
    • (a)- Characteristics, properties and identification of common alloy steels used in aircraft; Heat treatment and application of alloys steels;
    • (b)- Testing of ferrous materials for hardness,tensile strength, fatigue strength and impact resistance.
  • 6.2 Aircraft Materials (Non-Ferrous)
    • (a)- Characteristics, properties and identification of common non-ferrous materials used in aircraft;Heat treatment and application of non-ferrous materials;
    • (b)- Testing of non-ferrous material for hardness,tensile strength, fatigue strength and impact resistance.
  • 6.3 Aircraft Materials (Composite and Non-Metallic)

    Composite and non-metallic other than wood and fabric

    • (a)- Characteristics, properties and identification of common composite and non-metallic materials,other than wood, used in aircraft; Sealant and bonding agents.
    • (b)- The detection of defects in composite and non-metallic material;Repair of composite material.
  • Wooden Structures
    • Construction methods of wooden airframe structures;Characteristics, properties and types of wood and glue used in airplanes;Preservation of maintenance of wooden structures;Types of defects in wood material and wooden structures;
    • The detection of defects in wooden structure;Repair of wooden structure.
  • Fabric covering
    • Characteristics, properties and types of fabric used in airplanes;Inspection methods for fabric;Types of defects in fabric;Repair of fabric covering
  • 6.4 Corrosion
    • (a)- Chemical fundamentals; Formation by, galvanic action process, microbiological, stress;
    • (b)- Types of corrosion and their identification;Causes of corrosion; Material types, susceptibility to corrosion.
  • 6.5 Fasteners
    • Screw Threads Screw nomenclature;Thread forms, dimensions and tolerances for standard threads used in aircraft;Measuring screw threads.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 Locking devices Tab and spring washers, locking plates, split pins, pal-nuts, wire locking, quick release fasteners,keys, circlips, cotter pins.Aircraft rivets Types of solid and blind rivets: specifications and identification, heat treatment.
  • 6.6 Pipes and Unions
    • (a)- Identification of, and types of rigid and flexible pipes and their connectors used in aircraft;
    • (b)- 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 coaxial cables; Crimping; Connector types, pins,plugs, sockets, insulators, current and voltage rating, coupling, identification codes.

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