Module 6. Materials and Hardware (Part-66)

Content: Part-66 Module 6. Materials and Hardware

1. Aircraft Materials — Ferrous

• 1.1 Characteristics, properties and identification of common alloy steels usedin aircraft;
  • Heat treatment and application of alloy steels;
• 1.2 Testing of ferrous materials for hardness, tensile strength, fatigue strengthand impact resistance.

2. Aircraft Materials — Non-Ferrous

• 2.1 Characteristics, properties and identification of common non-ferrousmaterials used in aircraft;
  • Heat treatment and application of non-ferrous materials;
• 2.2 Testing of non-ferrous material for hardness, tensile strength, fatiguestrength and impact resistance.

3. Aircraft Materials — Composite and Non-Metallic

• 3.1 Composite and non-metallic other than wood and fabric
  • 3.1.1 Characteristics, properties and identification of common composite andnon-metallic materials, other than wood, used in aircraft;
  • Sealant and bonding agents.
  • 3.1.2 The detection of defects/deterioration in composite and non-metallicmaterial.
  • Repair of composite and non-metallic material.
• 3.2 Wooden structuresConstruction methods of wooden airframe structures;
• Characteristics, properties and types of wood and glue used inaeroplanes;
• 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.
• 3.3 Fabric coveringCharacteristics, properties and types of fabrics used in aeroplanes;
• Inspections methods for fabric;
• Types of defects in fabric;
• Repair of fabric covering.

4. Corrosion

• 4.1 Chemical fundamentals;
• Formation by, galvanic action process, microbiological, stress;
• 4.2 Types of corrosion and their identification;
• Causes of corrosion;
• Material types, susceptibility to corrosion.

5. Fasteners

• 5.1 Screw threads
• Screw nomenclature;
• Thread forms, dimensions and tolerances forstandard threads used in aircraft;
• Measuring screw threads;
• 5.2 Bolts, studs and screws
• Bolt types: specification, identification and markingof 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.
• 5.3 Locking devices
• Tab and spring washers, locking plates, split pins, pal-nuts, wire locking, quick release fasteners, keys, circlips, cotter pins.
• 5.4 Aircraft rivets
• Types of solid and blind rivets: specifications and identification, heattreatment.

6. Pipes and Unions

• 6.1 Identification of, and types of rigid and flexible pipes and their connectorsused in aircraft;
• 6.2 Standard unions for aircraft hydraulic, fuel, oil, pneumatic and air systempipes.

7. Springs

• Types of springs, materials, characteristics and applications.

8. Bearings

• Purpose of bearings, loads, material, construction;
• Types of bearings and their application.

9. Transmissions

• Gear types and their application;
• Gear ratios, reduction and multiplication gear systems, driven and drivinggears, idler gears, mesh patterns;
• Belts and pulleys, chains and sprockets.

10. Control Cables

• Types of cables;
• End fittings, turnbuckles and compensation devices;
• Pulleys and cable system components;
• Bowden cables;Aircraft flexible control systems.

11. Electrical Cables and Connectors

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