# Proposed AD 98-ANE-79-AD: General Electric Company CF6-80C2 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2000-03-04
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 26, 1999, 64 FR 57608
- Comments due: December 27, 1999
- Became: [AD 2000-03-04](https://openairdocs.org/ad/2000-03-04)
- Docket: 98-ANE-79-AD
- FR document: 99-27937
- Official PDF: https://openairdocs.org/files/sha256/fd/01/fd0112d96d2fd7f80727e83d6b2b25ff9078cd58ea5937dbe4acc3509898aca3 (from https://www.govinfo.gov/content/pkg/FR-1999-10-26/pdf/99-27937.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/10/26/99-27937/airworthiness-directives-general-electric-company-cf6-80c2-series-turbofan-engines
- Page: https://openairdocs.org/proposed/98-ANE-79-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to General Electric Company (GE) CF6- 80C2 series turbofan engines. This proposal would require removal from service of affected fan mid shafts prior to reaching a new, lower cyclic life limit, and replacement with serviceable parts. This proposal is prompted by recent component test data. The actions specified by the proposed AD are intended to prevent fan mid shaft failure, which could result in an uncontained engine failure and damage to the aircraft.

## Notices in this docket

- Oct 26, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-27937, comments due Dec 27, 1999 (https://www.federalregister.gov/documents/1999/10/26/99-27937/airworthiness-directives-general-electric-company-cf6-80c2-series-turbofan-engines)

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