Among the more approachable subjects — but its reputation as a "free pass" causes avoidable fails through under-preparation.
Last updated
Exam
50 questions
In 75 minutes, at the standard 75% pass mark.
Study load
lower end
Of the rough 40–80 h/subject planning range — it is a range, not a promise.
Sit alongside
Flexible
Affinity guidance below — matched to our in-app planner.
Flashcards in the exam
Not typical
No authority-published allowance we track for this subject.
Physiology of flight, hypoxia, hyperventilation, spatial disorientation, vision, stress, fatigue, decision making and crew resource management.
Half medical science, half psychology — with a defined syllabus vocabulary of its own.
For the full topic-by-topic syllabus breakdown, see the Human Performance & Limitations subject guide.
Any single number here would be false precision, so we won’t give one. As a rough planning figure, most self-study candidates allocate 40–80 hours per subject, and students report Human Performance & Limitations typically sitting toward the lower end of that range. A moderate exam with intuitive content for most candidates — typically toward the lower end of the per-subject budget.
Your own figure depends on background, maths comfort and whether you are studying full-time — treat the range as a budget to adjust, not a target to hit.
The physiology has hard facts to memorise (values, thresholds, symptoms), and the exam expects the syllabus’s specific terminology, not your paraphrase of it. The CRM and psychology material, by contrast, is tested through scenario questions where understanding the principle beats recalling a phrase.
Not part of our seeded affinity groups — a good flexible subject to balance a sitting that already contains a heavyweight like AGK or Meteorology.
How the pairings fit into a full plan — and why order matters — is covered in the recommended order of study, with the sitting mechanics in sittings & limits.
Important: Exam question counts and durations are set per authority and periodically revised, and difficulty reports are exactly that — student reports, not guarantees. Confirm current exam details with your ATO and authority before planning.
Among the more approachable subjects — but its reputation as a "free pass" causes avoidable fails through under-preparation.
The physiology has hard facts to memorise (values, thresholds, symptoms), and the exam expects the syllabus’s specific terminology, not your paraphrase of it. The CRM and psychology material, by contrast, is tested through scenario questions where understanding the principle beats recalling a phrase.
It is a range, and it genuinely varies by background — as a rough planning figure, most self-study candidates allocate 40–80 hours per subject, and students report Human Performance & Limitations typically sits toward the lower end of that range. A moderate exam with intuitive content for most candidates — typically toward the lower end of the per-subject budget.
Not part of our seeded affinity groups — a good flexible subject to balance a sitting that already contains a heavyweight like AGK or Meteorology.
Drill Human Performance & Limitations (040) questions with per-topic mastery tracking, spaced-repetition review, and timed mock exams at the real 75% pass mark.
