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Caffeine and Fatigue

A tired remote pilot drinks strong coffee and feels alert again. How should that feeling be treated?

  • A.As proof the fatigue has been cured for the rest of the day
  • B.As a reason to skip the next rest break
  • C.As a short-term masking of fatigue; only real rest restores performance
Correct answer

C. As a short-term masking of fatigue; only real rest restores performance

Why

Caffeine can temporarily hide sleepiness without restoring judgment, reaction time, or memory. The underlying fatigue returns, often abruptly, so caffeine is not a substitute for rest.

Source: FAA-G-8082-22 Ch. 9 · ACS knowledge area: Physiological Factors · From the Emergency Procedures & Human Factors practice bank (HUM-051).

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