What is the maximum reduction allowed for scheduled rest under specific compensatory conditions?

The maximum reduction allowed for scheduled rest under specific compensatory conditions is indeed nine hours. This standard is established to ensure that flight crew members receive adequate rest before they engage in flight operations. The regulations dictate that while there are circumstances under which rest can be reduced, the limit is set at nine hours to maintain safety and performance standards.

Reducing the scheduled rest period below this threshold can lead to fatigue, which increases the risk of errors and adversely affects decision-making during flight operations. The nine-hour limit allows for the essential recovery time that crew members need to operate aircraft safely under Part 135 operations, providing a balance between operational flexibility and safety regulations.