FAA Orders Replacement of Defective Lycoming Engine Piston Pins
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Table of Contents
The Federal Aviation Administration has issued a new airworthiness directive for specific Lycoming Model O-235, O-540, and IO-540 engines. This action is required because reports showed that certain piston pins in these engines failed, sending metal shavings into the oil system and causing engine failure.
Why it matters: This is a safety-critical maintenance requirement. While it only affects a specific subset of engines with a specific part, ignoring it risks catastrophic engine failure due to metal contamination. It is not a broad policy shift, but a targeted fix for a known mechanical defect.
Who it affects
- Owners and operators of Lycoming O-235, O-540, and IO-540 engines
This rule was issued by the Federal Aviation Administration and published in the Federal Register; readers should verify their specific engine serial numbers and part numbers against the original document to confirm applicability.
Agency: Transportation Department, Federal Aviation Administration
Source: Federal Register — read the official document