Q&A Forum
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EASA MODULES
1. Mathematics Arithmetic · Algebra · Geometry
162 threads 11 Sep 2026 · Marek_AME
2. Physics Matter · Mechanics · Thermodynamics · Optics (Light) · Wave Motion and Sound
137 threads 16 Sep 2026 · AnyaK
3. Electrical fundamentals DC Circuits & Power · Capacitance, Magnetism & Inductance · DC Machines & AC Theory · Transformers, Filters & AC Machines
157 threads 21 Sep 2026 · PART66Online
4. Electronic fundamentals Diodes · Transistors · Integrated Circuits · Printed Circuit Boards · Servomechanisms
27 threads 8 Jul 2026 · Marek_AME
5. Digital techniques / Electronic instrument systems Electronic Instrument Systems · Numbering Systems · Data Conversion · Data Buses · Logic, Computers & Displays
52 threads 6 days ago · PART66Online
6. Materials & hardware Ferrous Materials · Non-Ferrous Materials · Composites & Corrosion · Fasteners & Hardware · Pipes, Bearings & Cables
62 threads 9 Jun 2026 · Ody balsa
7. Maintenance practices Safety Precautions · Tools · Electrical Wiring (EWIS) · Riveting · Inspection & NDI
48 threads 1h ago · michelhello13-09
8. Basic aerodynamics Physics of the Atmosphere · Aerodynamics · Theory of Flight · Flight Stability and Dynamics
131 threads 21 Sep 2026 · Tomash
9. Human factors Human Error & Just Culture · Human Performance & Limitations · Communication & Teamwork · Performance Factors & Environment
31 threads 3 Oct 2026 · PART66Online
10. Aviation legislation Regulatory Framework · Certifying Staff · Maintenance Organisations · Air Operations · Continuing Airworthiness
35 threads 3 Aug 2026 · PART66Online
11. Aeroplane aerodynamics, structures and systems Theory of Flight · Airframe Structures · Hydraulics & Landing Gear · Air, Fuel & Environmental Systems · Electrical & Avionics
75 threads 22 Aug 2026 · khalidjat
12. Helicopter aerodynamics, structures and systems Rotary Wing Aerodynamics · Flight Control Systems · Transmissions · Airframe Structures · Hydraulic Power
25 threads 3h ago · kenguan76
13. Aircraft aerodynamics, structures and systems Electrical Power · Instruments · Communication / Navigation · Autoflight · Integrated Modular Avionics
60 threads 23 Mar 2026 · huly
14. Propulsion Engines · Engine Control · Engine Indication · Propeller Systems · Starting & Ignition
25 threads 11 Feb 2026 · Spaceresearcher
15. Gas turbine engine Fundamentals & Performance · Intake & Compressor · Combustion Section · Turbine & Exhaust · Indications, Monitoring & FOD
65 threads 29 Sep 2026 · PART66Online
16. Piston engine Fundamentals · Performance & Induction · Fuel & Carburettors · Ignition & Starting · Lubrication
1 thread 2 Sep 2026 · PART66Online
17. Propeller Fundamentals & Construction · Pitch Control · Synchronising · Ice Protection · Maintenance & Storage
35 threads 16 Aug 2026 · PART66Online
18. Electric power plant Fundamentals and Performance · Engine Construction · Batteries and Fuel Cells · Distribution and Control · Indication, Installation and Operation No threads yet
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10. Aviation legislation (UK CAA) Regulatory Framework · Certifying Staff - Maintenance · Approved Maintenance Organisations · Air operations · Certification of aircraft, parts and appliances: General · Certification of aircraft, parts and appliances: Documents · Continuing airworthiness · Applicable National and International Requirements (a) · Applicable National and International Requirements (b) No threads yet
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GENERAL DISCUSSION
Exams & Revision Sitting the exams, pass marks, negative marking and revision tactics.
1 thread 4 days ago · PART66Online
Licensing & Categories Licence categories A, B1, B2 and B3, applications and extensions. No threads yet
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Experience & Logbook Practical experience requirements, logbooks and on-the-job training. No threads yet
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Type Ratings Aircraft type training, type examinations and type question banks. No threads yet
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Working Abroad Licence recognition and conversion outside EASA. No threads yet
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RECENT ACTIVITY
M
Is no enough clear the exponetion of this answer
on “The data gives a turning torque for the bearings alone, read before the lip seal is fitted. Preload is instead adjusted with the seal in place until that figure is reached. What preload results?”
michelhello13-09 · 7. Maintenance practices · 0 replies · 1h ago
K
The question is "RELATIVE AIRFLOW" over a helicopter blade. Therefore the "REALTIVE AIRFLOW" is the same along the entire span of the blade, but because of the blade twist the difference is angle of attack which is less at the tip and greater at the root. To me the answer should be A. is unaffected by blade position
on “Relative airflow over a helicopter blade”
kenguan76 · 12. Helicopter aerodynamics, structures and systems · 0 replies · 3h ago
K
Shouldn't "C. ascend, unless the pilot decreases rotor RPM" be the correct answer? This is because due to torque, the fuselage tends to yaw right. Applying right pedal means you wish to yaw right, by decreasing the anti torque required (reducing thrust by tail rotor), so less power is needed by the tail rotor, more power available to the main rotor, helicopter ascends
on “A helicopter is hovering and the pilot applies right pedal. Assuming the main rotor rotates anti clockwise viewed from above, the helicopter will”
kenguan76 · 12. Helicopter aerodynamics, structures and systems · 1 reply · 1 day ago
K
Verbally I did ask a friends who work with large airliners, FMC database can only be activated on the ground. Need to verify if FMC database activation in flight is a helicopter thing or is the answer not accurate?
on “How is the next database on the FMC activated?”
kenguan76 · 12. Helicopter aerodynamics, structures and systems · 1 reply · 1 day ago
K
I've been going through some of the sample questions from this website & also from other sources, and I find that there are some questions in Module 12 that is not "related" to helicopters. Do these questions pop up in the actual Module 12 exam? And if they do, can we "contest" it as not related to the module? Example of questions (I stand corrected if some of them are actually related to helicopters): 1. Cargo containment class A, B, C... 2. ILS system
on “Module 12 - questions not related to helicopters?”
kenguan76 · Exams & Revision · 1 reply · 4 days ago
R
they are purple ??? was literally looking at fibre optic cables on a A320 neo.
on “On Airbus aircraft, fibre optic cable can be identified by its jacket colour, which is”
Rhysfaulkner96 · 5. Digital techniques / Electronic instrument systems · 1 reply · 6 days ago
F
what about high temepture does this affect to
on “Over the normal daily (circadian) cycle, human error is most likely when a person has”
filipninkovic2007 · 9. Human factors · 1 reply · 3 Oct 2026
A
This answer isnt wrong but isnt its main purpose to provide tip clearance? I feel aiding in acoustics is no where as important?
on “The primary purpose of the abradable lining in the fan case is to”
alectaylorob · 15. Gas turbine engine · 2 replies · 29 Sep 2026
A
not sure this question makes sense are you trying to prime it or discard fuel after a wet start or what?
on “To inhibit the fuel system of an installed engine for storage, with inhibiting oil supplied to the fuel inlet, you should”
alectaylorob · 15. Gas turbine engine · 3 replies · 28 Sep 2026
W
what i dont understand is how is the aircraft increase in altitude without an increase in AoA, hence the increase in induced drag
on “For a given IAS an increase in altitude will result in”
wan.yc.justin · 8. Basic aerodynamics · 1 reply · 21 Sep 2026