Q&A Forum
Ask a question1,118 questions · 1,919 answers · 461 members contributing
EASA MODULES
1. Mathematics Arithmetic · Algebra · Geometry
162 threads 5 days ago · Marek_AME
2. Physics Matter · Mechanics · Thermodynamics · Optics (Light) · Wave Motion and Sound
137 threads 9h ago · AnyaK
3. Electrical fundamentals DC Circuits & Power · Capacitance, Magnetism & Inductance · DC Machines & AC Theory · Transformers, Filters & AC Machines
156 threads 1 Jul 2026 · Marek_AME
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
51 threads 5 Jun 2026 · Devraj_S
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
47 threads 12 Jun 2026 · Rhysfaulkner96
8. Basic aerodynamics Physics of the Atmosphere · Aerodynamics · Theory of Flight · Flight Stability and Dynamics
130 threads 9h ago · Lisa_T
9. Human factors Human Error & Just Culture · Human Performance & Limitations · Communication & Teamwork · Performance Factors & Environment
30 threads 25 Aug 2026 · svenj88
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
22 threads 6 Oct 2025 · Majorkidkid
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
63 threads 6 Sep 2026 · hugohoarauhoarau
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
GENERAL DISCUSSION
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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
Z
what about the mercury why don't explain it
on “You are at the north pole where the temperature is minus 50 degrees C below freezing. What sort of thermometer would you use to measure it?”
ztknpi666 · 2. Physics · 1 reply · 9h ago
W
I fail to understand the different between speed brakes and spoilers. Even if i looked into google the photos basically identifies the spoiler parts as speed brakes as well.
on “Speed brakes:”
wan.yc.justin · 8. Basic aerodynamics · 1 reply · 9h ago
E
Non chiara la spiegazione, la notazione delle frazioni improprie sbagliata
on “4 3/8 - 2 1/4 + 1/5 =”
erik.daros.mac · 1. Mathematics · 1 reply · 5 days ago
E
Non si capisce il problema. Il punto B da quale parte della riva ? dalla parte dove devo arrivare o dove sono?
on “A pilot needs to find the distance across a river. From point A, the angle to point B across the river is 40 degrees, and AB along the bank is 50 m. Find the river width:”
erik.daros.mac · 1. Mathematics · 0 replies · 5 days ago
E
The wording of the question suggests the airflow is supersonic before reaching the convergent-divergent nozzle
on “In a converging-diverging nozzle with a choked throat and supersonic exit flow:”
ewanroles13 · 2. Physics · 1 reply · 8 Sep 2026
B
how can it reduce noise?
on “An abradable lining in the fan case”
bucks · 15. Gas turbine engine · 4 replies · 6 Sep 2026
J
This question is worded badly. If the mixture is set lean of peak, the cylinder head temperature will decrease, NOT increase. "too lean" is very ambiguous. Please be more precise in the wording!
on “What condition results from running the engine at high power with the mixture leaner than the engine manual specifies?”
jon@efm.ltd · 16. Piston engine · 1 reply · 2 Sep 2026
W
#1 being wrong is it because of the missing of keywords?
on “The aim of a human factors programme within an organisation is”
wan.yc.justin · 9. Human factors · 1 reply · 25 Aug 2026
K
2 dots equals 4 degrees. Each point represent 2 degrees and full deflection is 10 degrees
on “What deviation is indicated by 2 dots in a VOR system?”
khalidjat · 11. Aeroplane aerodynamics, structures and systems · 0 replies · 22 Aug 2026
J
What about a king air 200? The power control lever only operates the FCU via the connecting rod. The prop is controlled via a separate lever. That lever only controls the primary governor. So this question is not accurate. Not all aircraft have FADEC! A&B can be correct for this question so maybe it should read "on a modern turboprop aircraft the power lever controls?"
on “On a modern single lever turboprop, the power lever controls:”
josh93 · 17. Propeller · 1 reply · 16 Aug 2026