Q&A Forum
Ask a question1,106 questions · 1,908 answers · 460 members contributing
EASA MODULES
1. Mathematics Arithmetic · Algebra · Geometry
160 threads 5 Mar 2026 · SirPitz
2. Physics Matter · Mechanics · Thermodynamics · Optics (Light) · Wave Motion and Sound
134 threads 18 Jul 2026 · PART66Online
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 10 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
129 threads 4 Jun 2026 · Merejohn
9. Human factors Human Error & Just Culture · Human Performance & Limitations · Communication & Teamwork · Performance Factors & Environment
29 threads 1 Jul 2026 · AnyaK
10. Aviation legislation Regulatory Framework · Certifying Staff · Maintenance Organisations · Air Operations · Continuing Airworthiness
34 threads 7 Mar 2023 · PoziusLT
11. Aeroplane aerodynamics, structures and systems Theory of Flight · Airframe Structures · Hydraulics & Landing Gear · Air, Fuel & Environmental Systems · Electrical & Avionics
73 threads 21 Jun 2026 · AnyaK
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 24 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 1 Oct 2025 · c.stravopodis
16. Piston engine Fundamentals · Performance & Induction · Fuel & Carburettors · Ignition & Starting · Lubrication No threads yet
0 threads
17. Propeller Fundamentals & Construction · Pitch Control · Synchronising · Ice Protection · Maintenance & Storage
34 threads 6 days ago · svenj88
GENERAL DISCUSSION
Exams & Revision Sitting the exams, pass marks, negative marking and revision tactics. No threads yet
0 threads
Licensing & Categories Licence categories A, B1, B2 and B3, applications and extensions. No threads yet
0 threads
Experience & Logbook Practical experience requirements, logbooks and on-the-job training. No threads yet
0 threads
Type Ratings Aircraft type training, type examinations and type question banks. No threads yet
0 threads
Working Abroad Licence recognition and conversion outside EASA. No threads yet
0 threads
RECENT ACTIVITY
J
The PT6 starts with the blades in feather?
on “Propeller control during engine start:”
JayACA · 17. Propeller · 1 reply · 6 days ago
T
why is this here (coming from CASA system) this is a buit random
on “The temperature of boiling water at standard pressure on the Fahrenheit and Centigrade scale is”
Tj Anderson · 2. Physics · 1 reply · 18 Jul 2026
U
Class C is specially designed for RF and only that and can't be used for audio
on “The most suitable class of amplifier for a high fidelity radio transmitter is”
udreacc · 4. Electronic fundamentals · 1 reply · 8 Jul 2026
U
in the question it is not mentioned it is referring to AC
on “The output of a tachogenerator should be”
udreacc · 4. Electronic fundamentals · 1 reply · 8 Jul 2026
W
The question does not say if the LCR circuit is in series or parallel. Series RLC at resonance: XL and XC cancel, leaving only R. Impedance = low (just R, could be very low if R is small). Parallel RLC at resonance: XL and XC still cancel in terms of reactance, but because the components are in parallel, this results in high impedance - approaching infinite in the ideal case
on “A circuit containing a resistor, capacitor and inductor where resonant frequency is met, what will the impedance of the circuit be?”
Wesley · 3. Electrical fundamentals · 1 reply · 1 Jul 2026
T
I chose the correct answer, as confirmed by the notes at the bottom. However, it was marked as incorrect.
on “Consumption of alcohol”
THE_Eddie_ Murphy · 9. Human factors · 2 replies · 1 Jul 2026
A
ONE ANSWER IS ONLY NITROGEN AND ANOTHER SAYS nitrogen and not more than 5% of air. WHICH ONE IS CORRECT?
on “On large aircraft, braked wheel assemblies are normally inflated with”
Afshinarabi · 11. Aeroplane aerodynamics, structures and systems · 1 reply · 21 Jun 2026
J
why is 3*d and not 8*d?
on “What is the minimum bend radius of a loom adequately supported at a terminal block?”
Jordi · 7. Maintenance practices · 1 reply · 12 Jun 2026
M
how?
on “What must you do to make a 3 F capacitor circuit into a 2 F circuit?”
MohamedR04 · 3. Electrical fundamentals · 1 reply · 10 Jun 2026
A
Question is a bit ambiguous! Wouldn't the direction of load be radial and the type of load be compression?
on “A journal load is”
android811 · 6. Materials & hardware · 1 reply · 10 Jun 2026