# Airworthiness Directives; General Electric Company CF6-45A, CF6-50A, CF6-50C, and CF6-50E Series Turbofan Engines
> **Rule** · Final rule. · Published 2005-12-22 · Effective 2006-01-26 · 70 FR 75933
## Document
- **Document number:** 05-24341
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 70 FR 75933
- **Publication date:** 2005-12-22
- **Effective date:** 2006-01-26
- **FAA docket:** Docket No. FAA-2005-22124
## Abstract

The FAA is adopting a new airworthiness directive (AD) for General Electric Company (GE) CF6-45A, CF6-50A, CF6-50C, and CF6-50E series turbofan engines. This AD requires removing from service pre-GE Service Bulletin (SB) No. CF6-50S/B 72-1268 configuration low pressure turbine (LPT) stage 2 interstage seal assemblies and stage 3 interstage seal assemblies. This AD also requires installing new or reworked configuration stage 2 interstage seal assemblies and stage 3 interstage seal assemblies. This AD results from reports of fan mid shaft separation, leading to separation of the LPT stage 1 disk, disk overspeed, and uncontained engine failure. We are issuing this AD to prevent uncontained engine failure and damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2005/12/22/05-24341/airworthiness-directives-general-electric-company-cf6-45a-cf6-50a-cf6-50c-and-cf6-50e-series)
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