# Proposed AD FAA-2004-19144: General Electric Company (GE) CF6-80C2 and CF6-80E1 Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2005-17-05
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 22, 2004, 69 FR 56730
- Comments due: November 22, 2004
- Became: [AD 2005-17-05](https://openairdocs.org/ad/2005-17-05)
- Docket: FAA-2004-19144 (https://www.regulations.gov/docket/FAA-2004-19144, where comments are filed)
- Project: 2003-NE-18-AD
- FR document: 04-21275
- Official PDF: https://openairdocs.org/files/sha256/6a/0f/6a0f1e5cca98b7335c11bd4df8d2c19e2ccd105aba8d6b40a076ee597405cbee (from https://www.govinfo.gov/content/pkg/FR-2004-09-22/pdf/04-21275.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/09/22/04-21275/airworthiness-directives-general-electric-company-ge-cf6-80c2-and-cf6-80e1-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DFE0D8970A2EAAC086256F17005882BE.0001
- Page: https://openairdocs.org/proposed/FAA-2004-19144

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain GE CF6-80C2 and CF6-80E1 turbofan engines. This proposed AD would require you to:

Inspect the high pressure compressor rotor (HPCR) stage 11-14 spool shaft for circumferential repair cuts, and

Repair or replace the spool shaft if you find certain circumferential cuts.

This proposed AD results from an updated stress analysis. We are proposing this AD to prevent failure of the HPCR stage 11-14 spool shaft due to low-cycle fatigue that could result in an uncontained engine failure.

## Notices in this docket

- Sep 22, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-21275, comments due Nov 22, 2004 (https://www.federalregister.gov/documents/2004/09/22/04-21275/airworthiness-directives-general-electric-company-ge-cf6-80c2-and-cf6-80e1-turbofan-engines)

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