All 509 learning objectives of EASA ATPL(A) subject 021, numbered per the 2020 syllabus as aligned with ECQB 2026. Objectives marked BK are basic knowledge, assessed at your ATO rather than in the central examination. Where a lesson link appears, our course teaches that objective — the map fills in as the course grows.
Remark: For any reference to the direction of current flow, the conventional current flow shall be used, i.e. from positive to negative.
Remark: For standardisation purposes, the following standard expressions are used: DC generator: produces DC output; DC alternator: produces AC, rectified by integrated rectifying unit, the output is DC; DC alternator: producing a DC output by using a rectifier; AC generator: produces AC output; starter generator: integrated combination of a generator and a starter motor; permanent magnet alternator/ generator: self-exciting AC generator.
Remark: This topic includes diesel and petrol engines.