# Proposed AD FAA-2006-24145: General Electric Company CF6-45 and CF6-50 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2009-04-17
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 4, 2011, 76 FR 292
- Comments due: February 18, 2011
- Became: [AD 2009-04-17](https://openairdocs.org/ad/2009-04-17)
- Docket: FAA-2006-24145 (https://www.regulations.gov/docket/FAA-2006-24145, where comments are filed)
- Project: 2006-NE-06-AD
- FR document: 2010-33167
- Official PDF: https://openairdocs.org/files/sha256/7e/6b/7e6b113b1de5a9c207fce23306451bfb65f28067cf4e173c941f23f1f13f2cc9 (from https://www.govinfo.gov/content/pkg/FR-2011-01-04/pdf/2010-33167.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/01/04/2010-33167/airworthiness-directives-general-electric-company-cf6-45-and-cf6-50-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/28D57A7D4D9E8BD98625780E004961B1.0001
- Page: https://openairdocs.org/proposed/FAA-2006-24145

## Summary

We propose to supersede an existing airworthiness directive (AD) that applies to General Electric Company (GE) CF6-45 and CF6-50 series turbofan engines. The existing AD requires replacing certain forward and aft centerbodies of the long fixed core exhaust nozzle (LFCEN) assembly. Since we issued that AD, we became aware that other forward and aft centerbodies are also affected. This proposed AD would add certain new centerbodies requiring replacement. This proposed AD is prompted by the discovery of more part numbers (P/Ns) of centerbodies requiring replacement. We are proposing this AD to prevent the forward and aft centerbody of the LFCEN assembly from separating from the engine, damage to the engine, and damage to the airplane.

## Notices in this docket

- Mar 31, 2006: Notice of proposed rulemaking (NPRM). (first notice), FR document E6-4702, comments due May 30, 2006 (https://www.federalregister.gov/documents/2006/03/31/E6-4702/airworthiness-directives-general-electric-company-cf6-45-and-cf6-50-series-turbofan-engines)
- Jan 2, 2008: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period., FR document E7-25458, comments due Feb 19, 2008 (https://www.federalregister.gov/documents/2008/01/02/E7-25458/airworthiness-directives-general-electric-company-cf6-45-and-cf6-50-series-turbofan-engines)
- Jan 4, 2011: Notice of proposed rulemaking (NPRM)., FR document 2010-33167, comments due Feb 18, 2011 (https://www.federalregister.gov/documents/2011/01/04/2010-33167/airworthiness-directives-general-electric-company-cf6-45-and-cf6-50-series-turbofan-engines)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.