# Proposed AD 2002-NE-09-AD: General Electric Company CF6-80A1/A3 and CF6-80C2A PMC Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2003-12-08
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 21, 2002, 67 FR 42202
- Comments due: August 20, 2002
- Became: [AD 2003-12-08](https://openairdocs.org/ad/2003-12-08)
- Docket: 2002-NE-09-AD
- FR document: 02-15642
- Official PDF: https://openairdocs.org/files/sha256/a7/f8/a7f862fe6769c59397b393005512148bcde3bf38251eb6ba1c75c26944ec4d58 (from https://www.govinfo.gov/content/pkg/FR-2002-06-21/pdf/02-15642.pdf)
- Federal Register: https://www.federalregister.gov/documents/2002/06/21/02-15642/airworthiness-directives-general-electric-company-cf6-80a1a3-and-cf6-80c2a-pmc-series-turbofan
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/19776729F734AA6F86256BDF0055E4B0.0001
- Page: https://openairdocs.org/proposed/2002-NE-09-AD

## Summary

The Federal Aviation Administration (FAA) proposes to adopt a new airworthiness directive (AD) that is applicable to General Electric Company (GE) CF6-80A1/A3 and CF6-80C2A PMC series turbofan engines. This proposal would require performing either a Directional Pilot Valve (DPV) pressure switch moisture purge procedure and an operational check of the fan reverser or replacing the DPV assembly with a serviceable assembly and performing an operational check of the fan reverser. Thereafter, this AD would require one of these actions on a repetitive basis. This proposal is prompted by a review of fan reverser safety analyses resulting from the discovery of an undetectable failure mode of the DPV pressure switch on certain GE CF6-80C2A and CF6-80A engine models. The actions specified in the proposed AD are intended to prevent inadvertent fan reverser deployment, which, if it occurred in-flight, could result in loss of control of the airplane.

## Notices in this docket

- Jun 21, 2002: Notice of proposed rulemaking (NPRM). (first notice), FR document 02-15642, comments due Aug 20, 2002 (https://www.federalregister.gov/documents/2002/06/21/02-15642/airworthiness-directives-general-electric-company-cf6-80a1a3-and-cf6-80c2a-pmc-series-turbofan)

---
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.