According to FAR 121.481, what are the crew rest requirements?

The crew rest requirements outlined in FAR 121.481 are established to ensure that flight crew members receive adequate rest before duty periods to maintain safety and performance levels. The correct answer emphasizes that crew members must have a minimum of 8 hours of rest between duty periods. This duration is critical as it is considered sufficient for recuperation and to reduce the potential for fatigue, which can adversely affect flight safety.

The regulation mandates this specified rest period to ensure that flight crews arrive for their duties in a fit and alert state. Ensuring adequate rest also helps in complying with broader fatigue risk management strategies that the Federal Aviation Administration (FAA) advocates for within the aviation industry.