# Proposed AD FAA-2011-0533: Lycoming Engines (Type Certificate Previously Held by Textron Lycoming) Reciprocating Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-03-07
- Products: Lycoming Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 1, 2011, 76 FR 54397
- Comments due: October 17, 2011
- Became: [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07)
- Docket: FAA-2011-0533 (https://www.regulations.gov/docket/FAA-2011-0533, where comments are filed)
- Project: 2011-NE-16-AD
- FR document: 2011-22351
- Official PDF: https://openairdocs.org/files/sha256/1f/6e/1f6e62a1fc7384dd2c7fe10acd1936bf8d9ac10ffbb173ce7cf057bf2860ab96 (from https://www.govinfo.gov/content/pkg/FR-2011-09-01/pdf/2011-22351.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/09/01/2011-22351/airworthiness-directives-lycoming-engines-type-certificate-previously-held-by-textron-lycoming
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9BD63E75BA2B6276862578FE004CBACA.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0533

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require 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. This proposed 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. We are proposing this AD to prevent engine in-flight shutdown, power loss, and reduced control of the airplane.

## Notices in this docket

- Sep 1, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-22351, comments due Oct 17, 2011 (https://www.federalregister.gov/documents/2011/09/01/2011-22351/airworthiness-directives-lycoming-engines-type-certificate-previously-held-by-textron-lycoming)

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