MODULE 12 · Category A
Helicopter aerodynamics, structures and systems
1,283 original questions for Category A. Real paper: EASA 100 questions in 125 minutes (pass 75/100 (75%)); UK CAA 100 questions in 125 minutes.
Paper 1, timed
The full exam-style paper with the real question count and clock. Answers after you submit.
FreeQuick practice (20 questions)
Instant feedback and the explanation after every answer.
Exam-style papers
Questions are spread over the sub-modules like the AMC to Appendix II. Pick EASA or UK CAA rules on the start screen. Aim for three papers at 85%+.
- FREEPaper 1
- PROPaper 2
- PROPaper 3
- PROPaper 4
- PROPaper 5
- PROPaper 6
- PROPaper 7
- PROPaper 8
- PROPaper 9
- PROPaper 10
Practise by sub-module
- 12.1 Theory of flight - rotary wing aerodynamics89 questionsPRO
- 12.2 Flight control systems (ATA 67)91 questionsPRO
- 12.3 Blade tracking and vibration analysis (ATA 18)89 questionsPRO
- 12.4 Transmission57 questionsPRO
- 12.5 Airframe structures (ATA 51)124 questionsPRO
- 12.6 Air conditioning (ATA 21)68 questionsPRO
- 12.7 Instruments/avionic systems158 questionsPRO
- 12.8 Electrical Power (ATA 24)100 questionsPRO
- 12.9 Equipment and furnishings (ATA 25)59 questionsPRO
- 12.10 Fire Protection (ATA 26)48 questionsPRO
- 12.11 Fuel Systems (ATA 28)80 questionsPRO
- 12.12 Hydraulic Power (ATA 29)80 questionsPRO
- 12.13 Ice and Rain Protection (ATA 30)40 questionsPRO
- 12.14 Landing Gear (ATA 32)68 questionsPRO
- 12.15 Lights (ATA 33)38 questionsPRO
- 12.16 Integrated Modular Avionics (ATA 42)32 questionsPRO
- 12.17 On-board maintenance systems (ATA 45)30 questionsPRO
- 12.18 Information Systems (ATA 46)32 questionsPRO
Study notes for Module 12
- 12.1 Theory of flight — rotary wing aerodynamicsFREE
- 12.2 Helicopter flight control systems (ATA 67)PRO
- 12.3–12.4 Blade tracking, vibration analysis and transmissionPRO
- 12.5 Helicopter airframe structures (ATA 51)PRO
- 12.6 and 12.13 Helicopter air conditioning, ice and rain protectionPRO
- 12.7 Helicopter instruments and avionic systemsPRO
- 12.8 and 12.15 Helicopter electrical power and lightsPRO
- 12.9 and 12.10 Helicopter equipment, furnishings and fire protectionPRO
- 12.11 and 12.12 Helicopter fuel and hydraulic power systemsPRO
- 12.14 Helicopter landing gear (ATA 32)PRO
- 12.17–12.19 IMA, on-board maintenance and information systems (helicopters)PRO
Module 12 for another category: B1.3 · printable questions