For scheduled flight operations, what is the required rest period if the scheduled flight time is less than 8 hours?

In scheduled flight operations, particularly under Part 135 regulations, the required rest period for flight crew members is determined based on the scheduled flight time. If the scheduled flight time is less than 8 hours, the regulation mandates that the flight crew must have a minimum rest period of 9 hours before reporting for duty.

This requirement is in place to ensure that crew members are adequately rested and can perform their duties safely and effectively. Adequate rest helps to mitigate fatigue, which is a critical factor in flight safety. The emphasis on providing a sufficient rest period reflects the industry's understanding of the need to maintain high standards of safety and operational efficiency.

In contrast, longer scheduled flight times would necessitate a longer rest period, such as 10, 11, or even 12 hours, in order to adequately prepare the flight crew for the demands of longer flights. Thus, the clear link between rest periods and scheduled flight times is an essential aspect of safe aviation operations.