Propulsion EASA Part-66 — Module 14 Practice Questions

What Module 14 covers — in plain English

Module 14 of the EASA Part-66 syllabus is the propulsion module for avionics-stream candidates. It covers how aircraft engines work — gas turbines, piston engines, auxiliary power units and the newer electric and hybrid architectures — but from a systems-and-indications angle rather than the deep mechanical-overhaul angle a B1 engineer would meet in Module 15 or 16. You are expected to understand engine control (FADEC, EEC, hydromechanical fuel control), the full set of engine-indication systems (EGT, N1/N2, EPR, oil and fuel parameters, vibration), propeller systems, and the starting & ignition circuits that interface with the rest of the avionics suite.

Following the 2023/989 amendment effective 12 June 2024, Module 14 was restructured from three sections into four. Auxiliary power units, piston engines and electric / hybrid propulsion are now explicitly called out under 14.1, propeller systems were promoted to their own dedicated 14.3 section, and starting & ignition became 14.4. The exam also grew from 24 questions in 30 minutes to 32 questions in 40 minutes — about 75 seconds per question — so pace matters.

Cat A, B1 and B3 candidates do not sit this module — their propulsion content lives in Modules 15 (gas turbine), 16 (piston) and 17 (propeller). Only Cat B2 and B2L (avionics) are examined on Module 14, both at the same 32-question paper length. Where a B1 engineer must be able to disassemble, inspect and re-rig the hardware, the B2 / B2L candidate is examined on how the engine interfaces with the rest of the aircraft: indication wiring, control laws, signal conditioning and the interlocks that protect the engine from a runaway start or an overspeed.

Knowledge level is 1 across the engine-architecture sub-sections 14.1 (a) through (d) — you need a working overview of how turbine, APU, piston and electric / hybrid powerplants are arranged and what their major components do — and level 2 for engine control (14.1 e), engine indication (14.2), propellers (14.3) and starting & ignition (14.4), meaning you must understand the principles and apply them, not just recognise the words. The full per-section knowledge-level breakdown and detailed bullet list are on our Module 14 syllabus page.

These samples are drawn from our live Module 14 question bank of 660 questions. The full timed practice quiz draws 32 questions per attempt (or 0 for Cat A), scored against the official EASA 75 % pass mark, with weak-area tracking across attempts.