ATPL Human Factors study guide
ATPL Human Factors · Work through your exam, one topic at a time.
Human Factors is one of the fourteen ground subjects in the EASA Airline Transport Pilot Licence theoretical knowledge syllabus, published as subject 040. It exists because most accidents in modern commercial aviation trace back to human performance rather than technical failure, so the licensing authority expects pilots to understand their own physiology, perception, decision-making and teamwork before they sit in a multi-crew cockpit. The ATPL Human Factors study guide has 9 sections and about 2,398 words.
01Human Factors: Basic Concepts
Human factors studies the fit between people and the aviation system: the machine, the procedures, the environment and the organisation. Candidates must know the SHELL model (Software, Hardware, Environment, Liveware), the distinction between flight-deck centred and system-centred views, and the shift from a blame culture to a safety culture.
310 words, about 2 min02Basic Aviation Physiology and Health Maintenance
This domain covers the body in flight: hypoxia, hyperventilation, decompression, barotrauma, spatial disorientation, vision, hearing, fatigue, circadian rhythm, and the effects of alcohol, drugs and smoking. Candidates must understand oxygen partial pressure and how it falls with altitude, the difference between hypoxic and hypemic hypoxia, and the time of useful consciousness (TUC) at various cabin altitudes.
278 words, about 1 min03Basic Aviation Psychology
Basic aviation psychology covers perception, attention, memory, motivation, personality, attitudes and stress. Candidates must know the difference between sensation (raw stimulus) and perception (interpretation), the limits of attention (selective and divided), and the working-memory bottleneck.
275 words, about 1 min04Human Error and Reliability
This domain examines error models and reliability: the error chain, the Swiss cheese model, error types (slips, lapses, mistakes, violations), and the difference between active failures and latent conditions. Candidates must understand Reason's model, the SHEL/SHELL link, and the concept of error management rather than error elimination.
293 words, about 1 min05Human Overload and Underload
This domain covers workload: the inverted-U relationship between arousal and performance, overload and underload, and the difference between physical and mental workload. Candidates must understand that both too much and too little demand degrade performance, and that underload produces boredom, complacency and vigilance decrements.
262 words, about 1 min06Advanced Aviation Psychology: Human Information Processing
This domain examines the information-processing chain: sensing, perception, decision-making, response and feedback. Candidates must understand the limits of each stage, the role of attention and working memory, and decision models such as the DECIDE model and recognition-primed decision-making.
249 words, about 1 min07Crew Resource Management and Teamwork
CRM is the effective use of all available resources: people, equipment, information and time. Candidates must understand leadership, followership, assertiveness, situational awareness, briefings and debriefings, and the concept of the error chain and its management.
259 words, about 1 min08Crew Coordination and Communication
This domain covers communication within the crew and with external agencies: standard phraseology, readback, closed-loop communication, and the barriers to effective communication such as noise, fatigue, authority gradients and cultural differences. Closed-loop communication : sender transmits, receiver reads back, sender confirms.
217 words, about 1 min09Human Factors in Flight Safety
This domain integrates human factors into safety management: the accident causation chain, safety culture, reporting systems, and the role of human factors in occurrence investigation. Candidates must understand the difference between safety culture and safety climate, and the role of just culture in reporting.
255 words, about 1 min