EASA 031 Mass & Balance case studies

Mass & Balance (031) is one of the knowledge modules required for EASA Part-66 aircraft maintenance licences, and it also underpins the theoretical knowledge expected of pilots and dispatchers. It tests whether you can work confidently with aircraft mass, centre of gravity and the documentation that controls both. The subject is deliberately practical: you are asked to convert between mass and weight, identify which structural or performance limit governs a given flight, compute moments and CG positions from loading data, and explain why a forward or aft CG affects stability, control and fuel consumption. Candidates meet it in both maintenance and flight-training pathways, so the syllabus ranges from definitions and weighing procedures to hold loading limits, load sheets and fuel density corrections. The EASA 031 Mass & Balance case studies are 5 cases and about 2,233 words.