AD 2026-04-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lycoming | Various | Airworthiness Directives; Lycoming Engines |
Unsafe Condition
Reports of connecting rod failures, which resulted in uncontained engine failure and in-flight shutdowns.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect oil for bronze metal particulates, and if found, inspect connecting rod bushings for damage, proper fit, movement, and wear, and replace if necessary. Replace connecting rod bushings with parts eligible for installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours
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Affected Aircraft
Lycoming Engines model engines that have certain connecting rod assemblies installed, including Lycoming Model IO-580 series, IO-720 series, and O-290 series engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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