ATPL Powerplant and Electrics

The paper asks what happens next, and a list of parts will not tell you.80 questions. 2 hours. 75% to pass. Subject 021 is one examination in two halves, and this book is the second: electrics, piston engines and turbine engines, 312 learning objectives for 40 of the 80 marks. At 7.8 objectives per mark it is the dearer half. And its questions turn on a mechanism: what the EGT does when the bleeds come on.ATPL Powerplant and Electrics is a complete revision guide and question bank for the EASA and UK CAA airline transport pilot licence theory examination, written by an airline captain and Chief Flight Instructor, and built on all 312 learning objectives of topics 021 09, 021 10 and 021 11.It teaches the mechanism. Every system is reasoned from how it works. The worked examples all use one set of invented data: a medium-range jet, a regional turboprop and a six-cylinder piston engine. The examination gives you its own data, and you use it in the same way.What is insideWhere the marks are, on one page: turbine engines pay nineteen marks for 133 objectives, piston engines six for eighty-eight.212 practice questions with worked explanations - 172 through the chapters, plus a 40-question mock examination paper, the second half of the Subject 021 paper and weighted exactly as that half is, built only from objectives the chapters did not test. No question is asked twice.The confusable pairs and Traps, and why they work in every chapter: detonation and pre-ignition, compressor stall and engine surge.On the day. One flight per chapter, running the systems through a real operation.65 clear diagrams drawn for this book: the split AC schematic and the compressor map.Every figure sourced, in Numbers you must own. Self-check pages, a glossary and a 219-entry index.Ten chapters covering the second half of the syllabus: electrical fundamentals; power generation; distribution; the piston engine; its ignition and propellers; gas turbine principles; the intake and the compressor; combustion, turbine and exhaust; fuel control and FADEC; and operation and the APU.Written for the paper you are actually sitting. The book follows the 2026 EASA syllabus and CS-25 as it now stands, and says plainly where older textbooks differ: the reduced-thrust take-off, which AMC 25-13 now limits to no less than 60 per cent of maximum take-off thrust for a turbojet, not the older 25 per cent maximum reduction.Beyond the EU and UK. Written to the EASA ATPL(A) learning objectives, which also underpin the ATPL theory examinations of the United Arab Emirates (GCAA), Qatar (QCAA), Oman, Türkiye (SHGM), Singapore (CAAS), Malaysia (CAAM), Hong Kong (CAD), Sri Lanka (CAASL), Thailand (CAAT) and Pakistan (PCAA). A page at the front shows the paper this book serves with each authority and what to add from local sources. It also serves the related SACAA (South Africa) and DGCA (India) papers.A revision guide, not a course of training or a type rating: enrolment with an Approved Training Organisation remains a legal prerequisite. It contains no questions from any question bank - every question was written for this book. Its engines, aeroplane and data are fictional, and your aircraft's flight manual and operating procedures always take precedence.One of fourteen books in the Mastering ATPL series, one for each ATPL(A) theory subject, all written to the same pattern.