AD Amdt-39-10291
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Lycoming 320 and 360 | Airworthiness Directives; Certain Textron Lycoming 320 and 360 Series Reciprocating Engines |
| engine | Lycoming | 320 and 360 Series Reciprocating | Airworthiness Directives; Certain Textron Lycoming 320 and 360 Series Reciprocating Engines |
Unsafe Condition
Cracks in crankshafts originating from corrosion pits in the inside diameter (ID).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the crankshaft ID for corrosion pits. If corrosion pits are found, perform magnetic particle inspection (MPI) or fluorescent penetrant inspection (FPI) for cracks before further flight. Apply preventive treatment coating on non-corroded crankshafts to prevent corrosion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight if corrosion pits are found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Textron Lycoming 320 and 360 series reciprocating engines subject to the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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