Decision making and flight planningQuestion 758 of 934

In the IMSAFE checklist, what does the letter S stand for?

  1. Sleep
  2. Safety
  3. Speed
  4. Stress
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Correct answer: Stress

IMSAFE stands for Illness, Medication, Stress, Alcohol, Fatigue, and Emotion.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 2: Aeronautical Decision-Making — Mitigating Risk, page 47

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Questions last reviewed: 18 October 2026