Practice by module
EASA Part 66 modules
Pick any module and try 5 free questions right away — no account needed. Each comes with the correct answer and an explanation. Subscribe to unlock the full question bank and the real past exam papers.
Study modules
Module 1: Mathematics
M1The numerical foundation every aircraft maintenance engineer relies on — arithmetic, algebra and geometry.
501 questions→
Module 2: Physics
M2The physical principles behind how aircraft and their systems behave — matter, mechanics, heat, light and sound.
736 questions→
Module 3: Electrical Fundamentals
M3A thorough grounding in DC and AC electrical theory — from electron flow, resistance and capacitance to transformers, generators and motors.
850 questions→
Module 4: Electronic Fundamentals
M4The building blocks of aircraft electronics: semiconductors, printed circuit boards and servomechanisms.
378 questions→
Module 5: Digital Techniques & Electronic Instrument Systems
M5Digital and computer-based systems and the electronic instruments they drive — logic circuits, data buses, microprocessors, displays and fibre optics.
571 questions→
Module 6: Materials & Hardware
M6What aircraft are built from and the hardware that holds them together — metals, composites, corrosion, fasteners, bearings and cables.
759 questions→
Module 7: Maintenance Practices
M7The most hands-on of the certifying modules — the workshop, hangar and flight-line skills that turn theory into practice.
1398 questions→
Module 8: Basic Aerodynamics
M8Why aircraft fly — the atmosphere, aerodynamics, theory of flight and flight stability.
705 questions→
Module 9: Human Factors
M9How people — not just machines — affect safe maintenance: performance and limitations, communication, human error and workplace hazards.
321 questions→
Module 10: Aviation Legislation
M10The regulatory framework that governs licences, maintenance organisations and airworthiness — Part-66, Part-145, continuing airworthiness and certification.
607 questions→
Module 11: Aeroplane Aerodynamics, Structures and Systems
M11The big turbine-aeroplane systems module — airframe, flight controls, hydraulics, fuel, landing gear, pressurisation and avionics from nose to tail.
2611 questions→
Module 12: Helicopter Aerodynamics, Structures and Systems
M12The rotary-wing counterpart of Module 11 — rotor aerodynamics, transmissions, vibration analysis and the full range of helicopter systems.
487 questions→
Module 13: Aircraft Aerodynamics, Structures and Systems
M13The B2 avionics view of the whole aircraft — autoflight, communication and navigation, instruments, electrical and the systems an avionics engineer certifies.
1248 questions→
Module 14: Propulsion
M14How turbine powerplants and their indicating and starting systems work, from the B2 avionics perspective.
313 questions→
Module 15: Gas Turbine Engine
M15Gas turbine engines end to end — inlet, compressor, combustion, turbine and exhaust, plus the fuel, oil, air, ignition and monitoring systems around them.
1114 questions→
Module 16: Piston Engine
M16Piston aero-engines and their systems — construction, fuel, ignition, cooling, lubrication and installation.
267 questions→
Module 17: Propeller
M17Propeller theory, construction, pitch control, synchronising, ice protection and maintenance.
449 questions→
Real past exam papers
Actual EASA Part 66 exam papers — subscriber access.
Module 4: Electronic Fundamentals - Real Exam
M4An actual past EASA Part 66 Module 4 exam paper. The building blocks of aircraft electronics: semiconductors, printed circuit boards and servomechanisms.
69 questions→
Module 5: Digital Techniques & Electronic Instrument Systems - Real Exam
M5An actual past EASA Part 66 Module 5 exam paper. Digital and computer-based systems and the electronic instruments they drive — logic circuits, data buses, microprocessors, displays and fibre optics.
45 questions→
Module 6: Materials & Hardware - Real Exam
M6An actual past EASA Part 66 Module 6 exam paper. What aircraft are built from and the hardware that holds them together — metals, composites, corrosion, fasteners, bearings and cables.
120 questions→
Module 7: Maintenance Practices - Real Exam
M7An actual past EASA Part 66 Module 7 exam paper. The most hands-on of the certifying modules — the workshop, hangar and flight-line skills that turn theory into practice.
75 questions→
Module 8: Basic Aerodynamics - Real Exam
M8An actual past EASA Part 66 Module 8 exam paper. Why aircraft fly — the atmosphere, aerodynamics, theory of flight and flight stability.
20 questions→
Module 9: Human Factors - Real Exam
M9An actual past EASA Part 66 Module 9 exam paper. How people — not just machines — affect safe maintenance: performance and limitations, communication, human error and workplace hazards.
20 questions→
Module 10: Aviation Legislation - Real Exam
M10An actual past EASA Part 66 Module 10 exam paper. The regulatory framework that governs licences, maintenance organisations and airworthiness — Part-66, Part-145, continuing airworthiness and certification.
40 questions→