What is the maximum flying time allowed under Part 135 regulations in a 30-day period?

Under Part 135 regulations, the maximum flying time allowed in a 30-day period is indeed 160 hours. This limit is put in place to ensure safety and to prevent pilot fatigue, which can significantly impair a pilot's ability to operate an aircraft safely.

The rationale behind setting such a maximum is to help maintain a high standard of aviation safety by regulating the amount of time pilots can spend in the air, thereby ensuring they have adequate rest and are able to perform their duties effectively. The regulation is evidence of the aviation industry's commitment to safety, allowing pilots to manage their workloads and reduce risks associated with fatigue.

In this context, other options do not meet the regulatory requirements established by the Part 135 guidelines, and thus would not be valid limits for flying time in a 30-day period. It is essential for pilots and operators to be familiar with these regulations to ensure compliance and promote safety in their operations.