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AD: Aviat Aircraft Inc. Airplanes

AD NUMBER: 2019-10-06

PRODUCT: Certain Aviat Aircraft Inc. Models A-1C-180 and A-1C-200 (Husky) airplanes equipped with a Rapco part number RA1798-00-1 fuel vent check valve installed on either wing or both.

ACTION: Final Rule.

SUMMARY: This AD was prompted by a report that the fuel tank vent check valves are sticking in the closed position causing fuel starvation to the engine.

This AD requires revision of the airplane flight manual (AFM) to add a pre-flight check of the fuel vent check valves for proper operation and replacing any inoperative fuel vent check valve with an airworthy part.

DATES: This AD is effective July 22, 2019.

COST: The FAA estimates that this AD affects 98 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

  • Pre-flight check of the fuel vent check valve for proper operation as incorporated in the aircraft flight manual: .5 work-hour × $85 per hour = $42.50 per pre-flight check.
FMI: AD

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