AD 80-01-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31T | Airworthiness Directives; Piper Models PA-31T Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T1 | Airworthiness Directives; Piper Models PA-31T Airplanes |
Unsafe Condition
Leakage of the oil cooler inlet hose assembly, P/N 80026-05, causing oil loss and potential inflight engine shutdown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove engine cowlings and oil cooler inlet hose, inspect steel braiding for kinking, pressure test hose to 500 psi using dry nitrogen, replace hose if kinking or leakage is found, install new band clamp if no issues, reinstall components with proper support clamp, and verify no oil leaks after engine run.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 25 hours of operation as indicated unless already accomplished
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Affected Aircraft
Piper Models PA-31T serial numbers 31T-7920001 thru 7920068, 7920070 thru 7920080; and PA-31T1 serial numbers 31T-7904001 thru 7904044.
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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