AD 79-12-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-36-285 | Airworthiness Directives; Piper Model PA-36-285 Aircraft |
Unsafe Condition
Cracks in the welds on the aft side of the gussets of the engine mount attachment brackets on Piper Model PA-36-285 aircraft could lead to engine separation.
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Required Actions
Inspect welds for cracks on the aft side of the gussets using dye check or fluorescent penetrant inspection within 50 hours in service from the effective date. Repeat inspections at intervals not exceeding 100 hours in service. If cracks are found, install Piper Modification Kit No. 763877 or equivalent, and inspect forward side welds for cracks during installation. Repair cracks by removing and rewelding affected areas.
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Compliance Time
Within the next 50 hours in service from the effective date of this AD, unless accomplished within the previous 50 hours in service, and at intervals thereafter not to exceed 100 hours in service from the last inspection
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Affected Aircraft
Piper Aircraft Inc. Model PA-36-285 serial numbers 36-7360001 through 36-7660135
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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