What is the definition of unrested?

What is the definition of unrested?

• A. A disturbed night's sleep where the crew member was not able to obtain sufficient sleep
• B. A rostered series of duties disrupted to the extent that the crew member cannot continue to work in the short term
• C. Chronically unable to rest sufficiently to recover from previous duties
• D. A temporary feeling of fatigue after a long flight

Answer: (A)

Unrested centers on not having enough restorative sleep. The best description is a disturbed night where the crew member was not able to obtain sufficient sleep, because it captures the immediate sleep deficit that can impact performance. The other scenarios point to different fatigue or duty issues: a roster disruption preventing short-term work describes scheduling problems rather than the sleep shortfall itself; chronic inability to rest points to a long-term pattern rather than a single night of insufficient sleep; and a temporary fatigue after a long flight refers to fatigue from the flight itself, not from lacking rest.

Unrested centers on not having enough restorative sleep. The best description is a disturbed night where the crew member was not able to obtain sufficient sleep, because it captures the immediate sleep deficit that can impact performance. The other scenarios point to different fatigue or duty issues: a roster disruption preventing short-term work describes scheduling problems rather than the sleep shortfall itself; chronic inability to rest points to a long-term pattern rather than a single night of insufficient sleep; and a temporary fatigue after a long flight refers to fatigue from the flight itself, not from lacking rest.