What must pilots do if in doubt regarding the 35-foot crossing restriction at certain airfields?

When pilots find themselves uncertain about the 35-foot crossing restriction at specific airfields, it is crucial to consult the appropriate TERPS authority. TERPS, or Terminal Procedures Publication, provides the necessary guidance and specifications for terminal instrument procedures, including obstacle clearance and various approach requirements.

By reaching out to the TERPS authority or reviewing the relevant materials, pilots can obtain the most accurate and safe information regarding specific airfield procedures. This is important because ignoring the restriction or attempting to resolve the doubt through other means, such as only consulting ATC or relying solely on a flight manual, may not provide the definitive guidance needed to ensure safety during operations at that airfield. Proper adherence to TERPS guidelines helps maintain safe minimums and reduces the risk of accidents related to terrain and obstacles.