--- title: "MODULE 11. AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS — Part-66 · Avioverse" description: "MODULE 11. TURBINE AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS (Appendix I to Part-66) MODULE 11." url: "https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-annex-iii-part-66/module-11-aeroplane-aerodynamics-structures-and-systems" --- # MODULE 11. AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS Annex III (Part-66) · Regulation (EU) No 1321/2014 · EAR revision 2 Sep 2025 IR Implementing rule ## MODULE 11. AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS MODULE 11. TURBINE [AEROPLANE](https://avioverse.aero/glossary/easa/aeroplane) AERODYNAMICS, STRUCTURES AND SYSTEMS (Appendix I to Part-66) | MODULE 11. AEROPLANE AERODYNAMICS, STRUCTURES AND SYSTEMS | | | LEVEL | | | | | | ----------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- | ----- | -- | ---- | ----------- | -- | | | | | A1 | A2 | B1.1 | B1.2 / B1.E | B3 | | 11.1 Theory of flight | | | | | | | | | | (a) Aeroplane aerodynamics and flight controls; | | 1 | 1 | 2 | 2 | 1 | | | (b) Aeroplane, other aerodynamic devices. | | 1 | 1 | 2 | 2 | 1 | | 11.2 Airframe structures (ATA 51) | | | | | | | | | | | (a) General concepts; | 2 | 2 | 2 | 2 | 2 | | | | (b) Airworthiness requirements for structural strength; | 2 | 2 | 2 | 2 | 2 | | | | (c) Construction methods. | 1 | 1 | 2 | 2 | 2 | | 11.3 Airframe Structures — aeroplanes | | | | | | | | | 11.3.1 Fuselage, doors, windows (ATA 52/53/56) | | | | | | | | | | (a) Construction principles; | | 1 | 1 | 2 | 2 | 1 | | | (b) Airborne towing devices; | | 1 | 1 | 1 | 1 | 1 | | | (c) Doors. | | 1 | 1 | 2 | 1 | - | | 11.3.2 Wings (ATA 57) | | | 1 | 1 | 2 | 2 | 1 | | 11.3.3 Stabilisers (ATA 55) | | | 1 | 1 | 2 | 2 | 1 | | 11.3.4 Flight control surfaces (ATA 55/57) | | | 1 | 1 | 2 | 2 | 1 | | 11.3.5 Nacelles/pylons (ATA 54) | | | 1 | 1 | 2 | 2 | 1 | | 11.4 Air conditioning and cabin pressurisation (ATA 21) | | | | | | | | | | (a) Pressurisation; | | 1 | 1 | 3 | 3 | — | | | (b) Air supply; | | 1 | — | 3 | — | — | | | (c) Air conditioning; | | 1 | — | 3 | — | — | | | (d) Safety and warning devices; | | 1 | 1 | 3 | 3 | — | | | (e) Heating and ventilation system. | | — | 1 | — | 3 | 1 | | 11.5 Instruments/avionic systems | | | | | | | | | 11.5.1 Instrument systems (ATA 31) | | | 1 | 1 | 2 | 2 | 2 | | 11.5.2 Avionic Systems | | | 1 | 1 | 1 | 1 | 1 | | | Fundamentals of system layouts and operation of: — Autoflight (ATA 22), — Communications (ATA 23), — Navigation Systems (ATA 34). | | | | | | | | 11.6 Electrical power (ATA 24) | | | 1 | 1 | 3 | 3 | 3 | | 11.7 Equipment and furnishings (ATA 25) | | | | | | | | | | | (a) Emergency equipment; | 2 | 2 | 2 | 2 | 2 | | | | (b) Cabin and cargo layout. | 1 | 1 | 1 | 1 | — | | 11.8 Fire protection (ATA 26) | | | | | | | | | | | (a) Fire and smoke detection system and fire-extinguishing systems; | 1 | 1 | 3 | 3 | — | | | | (b) Portable fire extinguisher. | 1 | 1 | 1 | 1 | 1 | | 11.9 Flight controls (ATA 27) | | | | | | | | | | | (a) Primary and secondary flight controls; | 1 | 1 | 3 | 2 | 2 | | | | (b) Actuation and protection; | 1 | — | 3 | — | — | | | | (c) System operation; | 1 | — | 3 | — | — | | | | (d) Balancing and rigging. | 1 | 1 | 3 | 3 | 2 | | 11.10 Fuel systems (ATA 28, ATA 47) | | | | | | | | | | | (a) Systems layout; | 1 | 1 | 3 | 3/- | 1 | | | | (b) Fuel handling; | 1 | 1 | 3 | 3/- | 1 | | | | (c) Indication and warnings; | 1 | 1 | 3 | 3/- | 1 | | | | (d) Special systems; | 1 | — | 3 | — | — | | | | (e) Balancing. | 1 | — | 3 | — | — | | 11.11 Hydraulic power (ATA 29) | | | | | | | | | | | (a) System description; | 1 | 1 | 3 | 3 | 2 | | | | (b) System operation (1); | 1 | 1 | 3 | 3 | 2 | | | | (c) System operation (2). | 1 | — | 3 | — | — | | 11.12 Ice and rain protection (ATA 30) | | | | | | | | | | | (a) Principles; | 1 | 1 | 3 | 3 | 1 | | | | (b) De-icing; | 1 | 1 | 3 | 3 | 1 | | | | (c) Anti-icing; | 1 | — | 3 | — | — | | | | (d) Wipers; | 1 | 1 | 3 | 3 | 1 | | | | (d) Tail protection. | 1 | — | 3 | — | — | | 11.13 Landing Gear (ATA 32) | | | | | | | | | | | (a) Description; | 2 | 2 | 3 | 3 | 2 | | | | (b) System operation; | 2 | 2 | 3 | 3 | 2 | | | | (c) Air-ground sensing; | 2 | — | 3 | — | — | | | | (d) Tail protection. | 2 | 2 | 3 | 3 | 2 | | 11.14 Lights (ATA 33) | | | 2 | 2 | 3 | 3 | 2 | | 11.15 Oxygen (ATA 35) | | | 1 | 1 | 3 | 3 | 2 | | 11.16 Pneumatic/vacuum (ATA 36) | | | | | | | | | | | (a) Systems; | 1 | 1 | 3 | 3 | 2 | | | | (b) Pumps. | 1 | 1 | 3 | 3 | 2 | | 11.17 Water/waste (ATA 38) | | | | | | | | | | | (a) Systems; | 2 | 2 | 3 | 3 | 2 | | | | (b) Corrosion. | 2 | 2 | 3 | 3 | 2 | | 11.18 On-board [maintenance](https://avioverse.aero/glossary/easa/maintenance) systems (ATA 45) | | | 1 | — | 2 | — | — | | 11.19 Integrated Modular Avionics (ATA 42) | | | | | | | | | | | (a) Overall system description and theory; | 1 | — | 2 | — | — | | | | (b) Typical system layouts. | 1 | — | 2 | — | — | | 11.20 Cabin systems (ATA 44) | | | 1 | — | 2 | — | — | | 11.21 Information systems (ATA 46) | | | 1 | — | 2 | — | — | IR — Regulation (EU) No 1321/2014 · Continuing Airworthiness Easy Access Rules · EAR revision 2 Sep 2025 [All rules in APPENDICES TO ANNEX III (Part-66)](https://avioverse.aero/regulations/easa/continuing-airworthiness/part-66/appendices-to-annex-iii-part-66) Consolidated from the EASA Easy Access Rules (revision 2 Sep 2025, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.