# Proposed AD FAA-2005-23269: Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, and LO-360 Series Reciprocating Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-06-16
- Products: Lycoming Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 27, 2005, 70 FR 76431
- Comments due: January 26, 2006
- Became: [AD 2006-06-16](https://openairdocs.org/ad/2006-06-16)
- Docket: FAA-2005-23269 (https://www.regulations.gov/docket/FAA-2005-23269, where comments are filed)
- Project: 2005-NE-50-AD
- FR document: E5-7815
- Official PDF: https://openairdocs.org/files/sha256/5d/cc/5dcc702a82bf06961a4ae89e6545fa900edfb93bf2331953a61b78b23ac4d421 (from https://www.govinfo.gov/content/pkg/FR-2005-12-27/pdf/E5-7815.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/12/27/E5-7815/airworthiness-directives-lycoming-engines-formerly-textron-lycoming-aeio-360-io-360-o-360-lio-360
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1A9012D0BE80E41C862570E40068341F.0001
- Page: https://openairdocs.org/proposed/FAA-2005-23269

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Lycoming Engines (formerly Textron Lycoming) AEIO-360, IO- 360, O-360, LIO-360, and LO-360 series reciprocating engines. This proposed AD would require replacing certain crankshafts. This proposed AD results from a report of a crankshaft failure in a Lycoming LO-360-A1H6 reciprocating engine. We are proposing this AD to prevent failure of the crankshaft, which could result in total engine power loss, in- flight engine failure, and possible loss of the aircraft.

## Notices in this docket

- Dec 27, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document E5-7815, comments due Jan 26, 2006 (https://www.federalregister.gov/documents/2005/12/27/E5-7815/airworthiness-directives-lycoming-engines-formerly-textron-lycoming-aeio-360-io-360-o-360-lio-360)

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