# Proposed AD FAA-2005-21331: Engine Components Incorporated (ECi) Reciprocating Engine Connecting Rods

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2006-10-21
- Products: Engine Components
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 5, 2005, 70 FR 58103
- Comments due: December 5, 2005
- Became: [AD 2006-10-21](https://openairdocs.org/ad/2006-10-21)
- Docket: FAA-2005-21331 (https://www.regulations.gov/docket/FAA-2005-21331, where comments are filed)
- Project: 2005-NE-07-AD
- FR document: 05-19940
- Official PDF: https://openairdocs.org/files/sha256/97/0c/970cd99ad2279bb555e00e1bd2d624a0b05889c1ff98a8f4c0080d6e1093617b (from https://www.govinfo.gov/content/pkg/FR-2005-10-05/pdf/05-19940.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/10/05/05-19940/airworthiness-directives-engine-components-incorporated-eci-reciprocating-engine-connecting-rods
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D322565A1F6F04A5862570910068A10E.0001
- Page: https://openairdocs.org/proposed/FAA-2005-21331

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Lycoming Engines (formerly Textron Lycoming) 360 and 540 series reciprocating engines with ECi connecting rods, part number (P/ N) AEL 11750, installed. This proposed AD would require replacing certain serial-numbered connecting rods, P/N AEL 11750. This proposed AD would also prohibit installing certain ECi connecting rods, P/N AEL 11750 into any Lycoming 360 or 540 series reciprocating engines. This proposed AD results from reports of connecting rods with excessive variation in circularity of the journal bores. We are proposing this AD to prevent fatigue failure of the connecting rod and uncommanded shutdown of the engine.

## Notices in this docket

- Oct 5, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-19940, comments due Dec 5, 2005 (https://www.federalregister.gov/documents/2005/10/05/05-19940/airworthiness-directives-engine-components-incorporated-eci-reciprocating-engine-connecting-rods)

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