Module 6
Module 6: Materials and Hardware
A B1 B2 B2L B3
Commission Implementing Regulation (EU) 2023/989 amending Regulation (EU) No 1321/2014, Annex III (Part-66), Appendix I 12 June 2024
Knowledge Level Overview
| Ref | Topic | A | B1 | B2 | B2L | B3 |
|---|---|---|---|---|---|---|
| 6.1(a) | Materials, ferrous — Alloy steels used in aircraft | 1 | 2 | 1 | 1 | 2 |
| 6.1(b) | Materials, ferrous — Testing of ferrous materials | — | 1 | 1 | 1 | 1 |
| 6.1(c) | Materials, ferrous — Repair and inspection procedures | — | 2 | 1 | 1 | 2 |
| 6.2(a) | Materials, non-ferrous — Characteristics | 1 | 2 | 1 | 1 | 2 |
| 6.2(b) | Materials, non-ferrous — Testing of non-ferrous materials | — | 1 | 1 | 1 | 1 |
| 6.2(c) | Materials, non-ferrous — Repair and inspection procedures | — | 2 | 1 | 1 | 2 |
| 6.3.1(a) | Composite/non-metallic (other than wood & fabric) — Characteristics | 1 | 2 | 2 | 2 | 2 |
| 6.3.1(b) | Composite/non-metallic — Detection of defects | 1 | 2 | — | — | 2 |
| 6.3.1(c) | Composite/non-metallic — Repairs and inspection procedures | — | 2 | 1 | 1 | 2 |
| 6.3.2 | Wooden structures | 1 | 1 | — | — | 1 |
| 6.3.3 | Fabric covering | — | 1 | — | — | 1 |
| 6.4(a) | Corrosion — Chemical fundamentals | 1 | 1 | 1 | 1 | 1 |
| 6.4(b) | Corrosion — Types of corrosion | 2 | 3 | 2 | 2 | 3 |
| 6.5.1 | Fasteners — Screw threads | 2 | 2 | 2 | 2 | 2 |
| 6.5.2 | Fasteners — Bolts, studs and screws | 2 | 2 | 2 | 2 | 2 |
| 6.5.3 | Fasteners — Locking devices | 2 | 2 | 2 | 2 | 2 |
| 6.5.4 | Fasteners — Aircraft rivets | 1 | 2 | 1 | 1 | 2 |
| 6.6(a) | Pipes and unions — Identification | 2 | 2 | 2 | 2 | 2 |
| 6.6(b) | Pipes and unions — Standard unions | 2 | 2 | 1 | 1 | 2 |
| 6.7 | Springs | — | 2 | 1 | 1 | 2 |
| 6.8 | Bearings | 1 | 2 | 2 | 2 | 2 |
| 6.9 | Transmissions | 1 | 2 | 2 | 2 | 2 |
| 6.10 | Control cables | 1 | 2 | 1 | 1 | 2 |
| 6.11 | Electrical cables and connectors | 1 | 2 | 2 | 2 | 2 |
Knowledge levels: 1 = basic familiarisation, 2 = general knowledge, 3 = detailed knowledge. A dash (—) means the topic is not required for that category.
Note: In Appendix I the levels are listed under three columns — A, B1/B3 (shared), and B2/B2L (shared).
1 Basic familiarisation
2 General knowledge
3 Detailed knowledge
Examination
| Category | Questions | Duration |
|---|---|---|
| A | 52 | 65 min |
| B1 / B3 | 80 | 100 min |
| B2 / B2L | 60 | 75 min |
Detailed Syllabus
6.1Aircraft 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
6.2Aircraft 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 materials for hardness, tensile strength, fatigue strength and impact resistance
6.3Aircraft Materials — Composite and Non-Metallic
6.3.1Composite and Non-Metallic (other than wood and fabric)
- Characteristics, properties and identification of common composite and non-metallic materials used in aircraft
- Sealant and bonding agents
- Detection of defects/deterioration in composite and non-metallic material
- Repair of composite and non-metallic material
6.3.2Wooden Structures
- Construction methods of wooden airframe structures
- Characteristics, properties and types of wood and glue used in aeroplanes
- Preservation and maintenance of wooden structures
- Types of defect in wood material and wooden structures
- Detection of defects in wooden structures and repair
6.3.3Fabric Covering
- Characteristics, properties and types of fabrics used in aeroplanes
- Inspection methods for fabric
- Types of defects in fabric
- Repair of fabric covering
6.4Corrosion
- Chemical fundamentals
- Formation of corrosion, galvanic action, microbiological, stress corrosion
- Types of corrosion and their identification
- Causes of corrosion
- Material types, susceptibility to corrosion
6.5Fasteners
6.5.1Screw Threads
- Screw nomenclature
- Thread forms, dimensions and tolerances for standard threads used in aircraft
- Measuring screw threads
6.5.2Bolts, Studs and Screws
- Bolt types: specifications, identification and marking of aircraft bolts, international standards
- Nuts: self-locking, anchor nuts, standard types
- Machine screws: aircraft specifications
- Studs: types, insertion and removal
- Self-tapping screws, dowels
6.5.3Locking Devices
- Tab washers, lock washers, spring washers, locking plates
- Split pins, pal-nuts (stiff nuts)
- Wire locking
- Quick-release fasteners
- Keys, circlips, cotter pins
6.5.4Aircraft Rivets
- Types of solid and blind rivets
- Specifications and identification
- Heat treatment of rivets
6.6Pipes 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
6.7Springs
- Types of springs, materials, characteristics and applications
6.8Bearings
- Purpose of bearings, loads, material, construction
- Types of bearings and their application
6.9Transmissions
- 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
6.10Control Cables
- Types of cables
- End fittings, turnbuckles and compensation devices
- Pulleys and cable system components
- Bowden cables
- Aircraft flexible control systems
6.11Electrical Cables and Connectors
- 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