EASA Part-66 Module 9: Human Factors
Human performance, error, communication and safety culture.
Everything on this page is open and needs no account. Play the simulations, answer the sample questions, then open the full module for notes, mind maps and the complete question bank.
Sample exam questions
Real Part-66-style multiple choice with explanations. Options are shuffled each attempt, just like the exam.
General, quiz
1. What proportion of aviation maintenance occurrences are generally attributed to human factors rather than a purely mechanical cause?
Around 80%Around 20%Around 5%2. "Murphy's Law" as applied to maintenance design means:
If a part can be fitted incorrectly, eventually it will beOnly careless technicians make errorsErrors are always the fault of the last person to touch the aircraft3. The primary purpose of a human factors programme in an EASA Part-145 organisation is to:
Reduce the conditions that make error likelyIdentify individuals to discipline after an errorReplace technical training entirely4. The same wiring error is made independently by three different qualified technicians over a year. This most strongly suggests:
A systemic error trap in the design or procedureThree unrelated instances of carelessnessThe technicians need no further consideration5. "Poka-yoke" design features such as keyed connectors exist to:
Make the incorrect action physically difficult or impossibleSpeed up the task regardless of correctnessReplace the need for inspection6. Human factors as a discipline is primarily concerned with:
How people interact with tasks, equipment and each otherThe chemical composition of aircraft materialsEngine thermodynamics7. The SHEL(L) model describes the interfaces between the human and:
Software, hardware, environment and other people (liveware)Speed, height, endurance and liftOnly the aircraft structure8. In the SHEL model, a checklist or work card is part of the:
SoftwareHardwareEnvironment
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