Human-factors

Fatigue

Definition

A state of physical or mental exhaustion that degrades pilot performance. Fatigue reduces reaction time, decision-making ability, and situational awareness. It is a factor in many aviation accidents.

Related Terms

Duty Time Limitations

Regulations limiting the number of hours a pilot can fly and requiring minimum r...

Circadian Rhythm

The body natural 24-hour biological clock that regulates sleep-wake cycles. Disr...

Test your knowledge

Think you understand Fatigue? Challenge yourself with practice questions covering human-factors and all other ATPL subjects.

Start a Practice Quiz

Or browse all questions by subject