# Proposed AD 2003-NE-46-AD: General Electric Company CF6-80C2 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-07-13
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 12, 2003, 68 FR 64001
- Comments due: January 12, 2004
- Became: [AD 2004-07-13](https://openairdocs.org/ad/2004-07-13)
- Docket: 2003-NE-46-AD
- FR document: 03-28323
- Official PDF: https://openairdocs.org/files/sha256/72/82/7282ad1870f8ec0867378319f339cebc11d5e10d0e964ad91085fdbf4c779df8 (from https://www.govinfo.gov/content/pkg/FR-2003-11-12/pdf/03-28323.pdf)
- Federal Register: https://www.federalregister.gov/documents/2003/11/12/03-28323/airworthiness-directives-general-electric-company-cf6-80c2-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9FF683B769F5894A86256DDC004FCAE1.0001
- Page: https://openairdocs.org/proposed/2003-NE-46-AD

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for General Electric Company (GE) CF6-80C2 series turbofan engines. This proposed AD would require replacing certain high pressure turbine (HPT) stage 1 disks at or before reaching a new reduced life cycle limit. This proposed AD is prompted by an updated low-cycle-fatigue (LCF) analysis of the HPT stage 1 disk. We are proposing this AD to prevent LCF cracking and failure of the HPT stage 1 disk due to exceeding the life limit, which could result in an uncontained engine failure and damage to the airplane.

## Notices in this docket

- Nov 12, 2003: Notice of proposed rulemaking (NPRM). (first notice), FR document 03-28323, comments due Jan 12, 2004 (https://www.federalregister.gov/documents/2003/11/12/03-28323/airworthiness-directives-general-electric-company-cf6-80c2-series-turbofan-engines)

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