AD 2024-25365
Published 2024-10-31 · 1 model · 1 US-registered tails affected · Federal Register
Airworthiness Directives; Lycoming Engines Federal Register ↗
Abstract
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.
Applicability · by US fleet size
- PARKS 3 1 tails
Federal Register text
Verbatim; the Federal Register publication is the legally binding document. Cite: 89 FR 86721. View on Federal Register ↗
[Federal Register Volume 89, Number 211 (Thursday, October 31, 2024)] [Rules and Regulations] [Pages 86721-86723] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2024-25365]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-1695; Project Identifier AD-2023-00783-E; Amendment 39-22869; AD 2024-21-02] RIN 2120-AA64
Airworthiness Directives; Lycoming Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: 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.
DATES: This AD is effective December 5, 2024. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 5, 2024.