Aeroplane Aerodynamics, Structures and Systems EASA Part-66 — Module 11 Practice Questions

What Module 11 covers — in plain English

Module 11 is the largest module in the EASA Part-66 syllabus and the heart of any aeroplane-rated licence. It pulls together everything an aircraft maintenance engineer needs to know about how an aeroplane flies and how its on-board systems work — from the aerodynamic theory behind lift and stall, through airframe construction philosophies, to every major ATA chapter: hydraulics, landing gear, flight controls, electrical power, pneumatics, fuel, ice protection, oxygen, instruments and avionics. If a system is mentioned in a typical line-maintenance task card, it is almost certainly examined in Module 11.

The exam scales with licence category, and Module 11 has the longest paper of any module. Category A1 candidates sit 108 questions in 135 minutes; A2 sits 72 in 90 minutes; B1.1 candidates face 140 questions in 175 minutes, B1.2 sits 100 in 125 minutes, and B3 sits 60 in 75 minutes. There is no Category B2 paper for Module 11 — B2 avionics candidates sit Module 13 instead, although the underlying aircraft-system content overlaps heavily. The syllabus itself is split into two big halves: aerodynamics and structures (sections 11.1 to 11.3) and aircraft systems organised by ATA chapter (sections 11.4 to 11.21). The second half is where the bulk of the question bank lives, because each chapter mirrors a real on-aircraft system you will work on every day in the hangar.

Knowledge levels jump sharply for B1 candidates compared with Cat A. Most system chapters sit at level 3 for B1, meaning you need to understand detailed theory of operation, be able to troubleshoot, and apply principles to real fault scenarios — not just recognise components. Category A and B3 candidates mostly sit those same chapters at level 1 or 2, so the same question bank serves several licence tracks with very different depth expectations. Reading the knowledge-level table carefully before you study is the single best use of an hour: it tells you which chapters need rote learning and which need real comprehension.

Common Module 11 pitfalls cluster around three areas. First, aerodynamic relationships that look intuitive but aren’t — stall speed scales with the square root of load factor, not load factor itself, and the centre of pressure moves aft as a subsonic aircraft accelerates, not forward. Second, material and fluid compatibility — phosphate-ester hydraulic fluid attacks most rubbers, while titanium near phosphate-ester contamination becomes brittle. Third, control-logic questions where candidates confuse cause and effect — assuming a cabin pressure controller varies inlet flow rather than outflow, for example. The full per-section knowledge-level breakdown for each licence category is on our Module 11 syllabus page.

These samples are drawn from our live Module 11 question bank of 2 135 questions. The full timed practice quiz draws 140 questions per attempt (or 108 for Cat A), scored against the official EASA 75 % pass mark, with weak-area tracking across attempts.