AD 69-08-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Lycoming Engines | IO-540-G1A5 | LYCOMING ENGINES Model IO-540-G1A5 Engines |
Unsafe Condition
Failure of the engine crankshaft
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a placard on the aircraft instrument panel near the manifold pressure gauge stating: 'Do not exceed 24 inches Hg manifold pressure below 2400 rpm'.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 10 hours time in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lycoming Engines Model IO-540-G1A5 engines installed with Hartzell HC-A3VK-2A/8433A-7 Propellers
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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