What does 91.175 require crews under Part 135 to do?

Part 91.175 outlines the requirements for operating under visual flight rules (VFR) and instrument flight rules (IFR) pertaining to takeoff minimums. For crews operating under Part 135, which involves more structured regulations than general aviation, the important aspect of this rule is the requirement to comply with non-standard takeoff minimums when published.

This means that if a particular airport or runway has minimums that differ from the standard minimums—due to specific conditions such as terrain, obstructions, or other safety considerations—the crew must adhere to those published non-standard takeoff minimums. This ensures safety by requiring operators to be aware of and compensate for any local hazards that could affect safe takeoff operations.

Understanding this requirement highlights the importance of compliance with published guidelines that may vary from the norm, reinforcing operational safety for crews engaged in Part 135 operations. It's critical for pilots and crews to always refer to the latest publications and not just rely on standard minimums, particularly in varying operational environments.