# Airworthiness Directives; General Electric Company (GE) CF6-80C2 and CF6-80E1 Turbofan Engines
> **Rule** · Final rule. · Published 2005-08-23 · Effective 2005-09-27 · 70 FR 49178
## Document
- **Document number:** 05-16454
- **Category:** airworthiness
- **Manufacturer:** General Electric Company (GE) CF6-80C2 and CF6-80E1 Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 49178
- **Publication date:** 2005-08-23
- **Effective date:** 2005-09-27
- **FAA docket:** Docket No. FAA-2004-19144
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain GE CF6-80C2 and CF6-80E1 turbofan engines. This AD requires you to inspect the high pressure compressor rotor (HPCR) stage 11-14 spool shaft for circumferential repair cuts, and to repair or replace the spool shaft if you find certain circumferential cuts. This AD results from an updated stress analysis. We are issuing 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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/08/23/05-16454/airworthiness-directives-general-electric-company-ge-cf6-80c2-and-cf6-80e1-turbofan-engines)
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