AD 90-02-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-42 | Airworthiness Directives; PIPER Models PA-42, PA-42-720, and PA-42-720R Airplanes |
| aircraft | Piper Aircraft Inc. | PA-42-720 | Airworthiness Directives; PIPER Models PA-42, PA-42-720, and PA-42-720R Airplanes |
| aircraft | Piper Aircraft Inc. | PA-42-720R | Airworthiness Directives; PIPER Models PA-42, PA-42-720, and PA-42-720R Airplanes |
Unsafe Condition
Premature deterioration of the engine which could result in possible engine failure.
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Required Actions
Insert a copy of this AD in the Pilots Operating Handbook and FAA Approved Airplane Flight Manual (POH/AFM), revise the POH/AFM with specified revisions (Revision 8 of LK 1213 for PA-42, Revision 7 of LK 1394 or VB 1314 for PA-42-720, Revision 6 of LK 1485 for PA-42-720R), or annotate the POH/AFM by blocking out 'hot section inspections' and replacing with 'engine overhaul periods'.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 25 hours time-in-service after the effective date of this AD
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Affected Aircraft
Piper Aircraft Inc. Models PA-42, PA-42-720, and PA-42-720R (all serial numbers)
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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