AD 89-15-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Lycoming Engines | TIO-540-AE2A | TEXTRON LYCOMING Model TIO-540-AE2A Engines |
Unsafe Condition
Engine roughness and loss of engine power due to a defective engine pump diaphragm causing fuel leakage at the upper deck left nozzle vent manifold or fuel pump vent hose check valve.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a fuel leak check at the upper deck left nozzle vent manifold or fuel pump vent hose check valve. Replace pump with a new or serviceable pump if fuel is observed. Install restrictor type tee fitting P/N 02A21171 (Piper P/N 766-224) by removing tee fitting P/N AN-825-4. Ferry aircraft under FAR 21.197 and 21.199 if needed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 5 hours in service after the effective date of this AD unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
TEXTRON LYCOMING Model TIO-540-AE2A engines with serial numbers up to and including L9064-61A installed in Piper PA-46-350P airplanes certified in any category
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.