# Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies
> **Rule** · Final rule. · Published 2005-12-27 · Effective 2006-01-31 · 70 FR 76385
## Document
- **Document number:** 05-24449
- **Category:** airworthiness
- **Manufacturer:** Engine Components Inc. (ECi) Reciprocating
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 76385
- **Publication date:** 2005-12-27
- **Effective date:** 2006-01-31
- **FAA docket:** Docket No. FAA-2005-22358
## Abstract

The FAA is adopting a new airworthiness directive (AD) for Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, "Parallel Valve" reciprocating engines, with certain Engine Components Inc. (ECi) cylinder assemblies, part number (P/N) AEL65102 series "Classic Cast", installed. This AD requires replacing these ECi cylinder assemblies. This AD results from reports of about 30 failures of the subject cylinder assemblies marketed by ECi. We are issuing this AD to prevent loss of engine power due to cracks in the cylinder assemblies and possible engine failure caused by separation of a cylinder head.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/12/27/05-24449/airworthiness-directives-engine-components-inc-eci-reciprocating-engine-cylinder-assemblies)
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