Data / Federal rules / 2024-25365
Airworthiness Directives; Lycoming Engines
The Federal Aviation Administration published this final rule in the Federal Register on October 31, 2024. It took effect on December 5, 2024.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for Lycoming Engines (Lycoming) model engines that have a certain connecting rod assemblies installed. This AD was prompted by several reports of connecting rod failures, which resulted in uncontained engine failure and in-flight shutdowns (IFSDs). This AD requires repetitive oil inspections for bronze metal particulates and, if found, additional inspections of the connecting rod bushings for damage, proper fit, movement, and wear, and replacement if necessary. As terminating action to the connecting rod bushing inspections, this AD requires replacement of the connecting rod bushings with parts eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2024-25365
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- October 31, 2024
- Takes effect
- December 5, 2024
- Dates
- This AD is effective December 5, 2024.
- Docket
- Docket No. FAA-2024-1695; Project Identifier AD-2023-00783-E; Amendment 39-22869; AD 2024-21-02
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 3
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in October 2024
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.