# Proposed AD FAA-2012-1288: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2013-06-06
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 13, 2012, 77 FR 74125
- Comments due: February 11, 2013
- Became: [AD 2013-06-06](https://openairdocs.org/ad/2013-06-06)
- Docket: FAA-2012-1288 (https://www.regulations.gov/docket/FAA-2012-1288, where comments are filed)
- Project: 2012-NE-37-AD
- FR document: 2012-30072
- Official PDF: https://openairdocs.org/files/sha256/68/7d/687d202764fb7a0c7498db1ad1c2bc2c13a2d8f4d67453c7e07ef26e89eb20a0 (from https://www.govinfo.gov/content/pkg/FR-2012-12-13/pdf/2012-30072.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/12/13/2012-30072/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C583569D5A5CF69886257AD3004C7A6E.0001
- Page: https://openairdocs.org/proposed/FAA-2012-1288

## Summary

We propose to adopt a new airworthiness directive (AD) for all General Electric Company (GE) CF34-8C and CF34-8E turbofan engines with certain part numbers (P/N) of operability bleed valves (OBV) installed. This proposed AD was prompted by three failure events of ring lock fuel fittings on the OBV. Two of those events led to an engine fire. This proposed AD would require the affected OBVs be removed from service and replaced with OBVs eligible for installation. We are proposing this AD to prevent failure of OBV ring lock fuel fittings, engine fuel leakage, uncontrolled fire, and damage to the airplane.

## Notices in this docket

- Dec 13, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-30072, comments due Feb 11, 2013 (https://www.federalregister.gov/documents/2012/12/13/2012-30072/airworthiness-directives-general-electric-company-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.