# Airworthiness Directives; Lycoming Engines Reciprocating Engines
> **Rule** · Final rule. · Published 2012-02-21 · Effective 2012-03-27 · 77 FR 9837
## Document
- **Document number:** 2012-3862
- **Category:** airworthiness
- **Manufacturer:** Lycoming
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 9837
- **Publication date:** 2012-02-21
- **Effective date:** 2012-03-27
- **FAA docket:** Docket No. FAA-2011-0533
## Abstract

We are adopting a new airworthiness directive (AD) for certain Lycoming Engines reciprocating engines. This AD was prompted by a report of a "machined-from-billet" HA-6 carburetor having a loose mixture control sleeve that rotated in the carburetor body causing restriction of fuel and power loss. This AD requires removing certain "machined-from-billet" Volare LLC (formerly Precision Airmotive Corporation, formerly Facet Aerospace Products Company, formerly Marvel-Schebler (BorgWarner)) HA-6 carburetors, inspecting for a loose mixture control sleeve or for a sleeve that may become loose, repairing the carburetor, or replacing the carburetor with one eligible for installation. We are issuing this AD to prevent engine in-flight shutdown, power loss, and reduced control of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/02/21/2012-3862/airworthiness-directives-lycoming-engines-reciprocating-engines)
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