# Airworthiness Directives; Lycoming Engines Reciprocating Engines (Type Certificate previously held by Textron Lycoming Division, AVCO Corporation)
> **Rule** · Final rule. · Published 2015-02-04 · Effective 2015-03-11 · 80 FR 5905
## Document
- **Document number:** 2015-01281
- **Category:** airworthiness
- **Manufacturer:** Lycoming
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 80 FR 5905
- **Publication date:** 2015-02-04
- **Effective date:** 2015-03-11
- **FAA docket:** Docket No. FAA-2014-0540
## Abstract

We are adopting a new airworthiness directive (AD) for certain serial number (S/N) Lycoming Engines reciprocating engines. This AD was prompted by propeller governor shaft set screws coming loose due to improper installation. We are issuing this AD to prevent the propeller governor shaft set screw from coming loose, causing damage to the engine and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/02/04/2015-01281/airworthiness-directives-lycoming-engines-reciprocating-engines-type-certificate-previously-held-by)
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