Materials and hardware

Basic Module 6

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Applicability

This module is required for the following AML categories:

Issued on Regulation (EU) 2018/1142

Aircraft Materials - Ferrous

(A)
- Characteristics, properties and identification of common alloy steels used in aircraft;
- Heat treatment and application of alloy steels.
(B)
- Testing of ferrous materials for hardness, tensile strength, fatigue strength and impact resistance.

(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.

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/deterioration in composite and non-metallic material;
  - Repair of composite and non-metallic material.
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.
Fabric covering
- Characteristics, properties and types of fabrics used in aeroplanes;
- Inspections methods for fabric;
- Types of defects in fabric;
- Repair of fabric covering.

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.

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.

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.

Springs

Bearings

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.

Control Cables

Cable types, construction and characteristics;
High tension and co-axial cables;
Crimping;
Connector types, pins, plugs, sockets, insulators, current and voltage rating, coupling, identification codes.

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