ATPL Human Performance and Limitations

Human Performance is the subject everyone calls common sense. It is where careful candidates lose marks. 48 questions. 90 minutes. 75% to pass. Half the Subject 040 paper is physiology and numbers — thresholds, times of useful consciousness, blood pressures, G limits, alcohol rules. The other half turns on precise definitions, and the wrong options are usually right ideas wearing the wrong label. Common sense picks the familiar word. The examiner wants the defined one. ATPL Human Performance and Limitations 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 362 published learning objectives for Subject 040. What is inside Where the marks are, on one page. The published question distribution set against the syllabus, so you revise in the order that pays. 232 practice questions with worked explanations — 184 through the chapters, plus a 48-question mock examination paper weighted exactly as the real paper is, and built only from objectives the chapters did not test. No question is asked twice. Every number sourced. Each chapter ends with Numbers you must own, sorted by where the figure comes from: the syllabus itself, Part-MED, EASA guidance, the UK CAA, or conventional teaching. The confusable pairs and Traps, and why they work in every chapter: threat and error, slip and mistake, status and role, acute and chronic stress, TUC and EPT. On the day. One real flight per chapter, running the theory through an actual operation. 20 clear diagrams drawn for this book: the oxygen dissociation curve, the eye and the inner ear, the circadian rhythm, the sleep cycle, Yerkes–Dodson, the Swiss cheese model, SHELL, and the authority gradient. Self-check pages, an 89-term glossary and a full index. Nine chapters covering the whole syllabus: competence, threat and error management, SHELL, safety culture and SMS; hypoxia, hyperventilation, pressurisation, decompression sickness, acceleration and carbon monoxide; vision, night vision, hearing, the vestibular system, spatial disorientation and the approach illusions; the body clock, sleep, jet lag, barotrauma, diet, tropical medicine, alcohol, medication and incapacitation; information processing, memory and learning; human error, situation awareness and decision-making; crew resource management, leadership and communication; personality, stress, arousal, fatigue and fatigue risk management; and automation, mode awareness and complacency. Written for the paper you are actually sitting. The main text follows the EASA rules, and boxes marked UK give the UK position where it differs — Part-MED, the CAA's own guidance, and the UK criminal alcohol limit for flight crew. For integrated and modular students, frozen ATPL candidates, CPL and IR students meeting the same material, and line pilots refreshing CRM and aviation medicine. A revision guide, not a course of training: enrolment with an Approved Training Organisation remains a legal prerequisite for the examinations. It contains no questions from any question bank — every question was written for this book. It is not medical advice.