Fuel - Fuel Vent Check Valve - Replacement / Airplane Flight Manual Revision
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must revise the airplane flight manual by July 22, 2019, to include a pre-flight check of the fuel vent check valves. Any inoperative Rapco RA1798-00-1 fuel vent check valve must be replaced with an Aviat P/N 38266-501 valve. Operators may remove the AFM revisions if both Rapco valves are replaced. Compliance with these actions is mandatory by the effective date.
Summary
Federal Aviation Administration Airworthiness Directive 2019-10-06 is a final rule addressing certain Aviat Aircraft Inc. Models A-1C-180 and A-1C-200 airplanes equipped with Rapco part number RA1798-00-1 fuel vent check valves. The directive requires revising the airplane flight manual to include a pre-flight check of these fuel vent check valves and mandates replacing any inoperative valves with Aviat part number 38266-501 valves. This AD aims to prevent fuel starvation caused by fuel vent check valves sticking in the closed position.
What changed
This new airworthiness directive introduces a requirement to revise the airplane flight manual to add a pre-flight check of the fuel vent check valves for proper operation. It replaces the previously proposed replacement valve from Dukes with an Aviat-designed valve due to compatibility issues. The AD also updates cost estimates and clarifies maintenance and record-keeping procedures related to the valve replacement.
Why it matters
This AD is critical for aviation professionals as it addresses a safety risk of engine fuel starvation caused by malfunctioning fuel vent check valves. Operators and maintenance personnel must ensure compliance to maintain airworthiness and prevent in-flight engine power loss. The directive impacts pre-flight inspection routines and maintenance actions, requiring updated procedures and documentation.
More for Aviat Aircraft A-1 (Husky)
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New ADs and bulletins for Aviat Aircraft A-1 (Husky), A-1C-180 and A-1C-200, summarized like this page, every Monday.