AD 86-08-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | TSIO-520-BE | TELEDYNE CONTINENTAL MOTORS Model TSIO-520- BE |
Unsafe Condition
Failure of the engine driven fuel pump assembly (P/N 646571-1) could result in loss of engine power.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the engine driven fuel pump assembly (P/N 646571-1) and replace with fuel pump assembly (P/N 649374-1).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
TELEDYNE CONTINENTAL MOTORS Model TSIO-520-BE engines with serial numbers 528026, 528222, 528233, 528246, 528085, 528223, 528234, 528252, 528205, 528224, 528235, 528253, 528208, 528225, 528236, 528254, 528215, 528226, 528237, 528255, 528216, 528227, 528238, 528256, 528217, 528228, 528239, 528259, 528219, 528229, 528240, 528260, 528220, 528230, 528242, 528263, 528221, 528231, 528243 installed on Piper PA-46 (Malibu) airplanes.
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
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