# Proposed AD 2000-NE-42-AD: General Electric Company CF34 Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-10-03
- Products: GE Aircraft Engines
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 23, 2005, 70 FR 49215
- Comments due: October 24, 2005
- Became: [AD 2001-10-03](https://openairdocs.org/ad/2001-10-03)
- Docket: 2000-NE-42-AD
- FR document: 05-16709
- Official PDF: https://openairdocs.org/files/sha256/d1/1a/d11a9522ac7146d7b7d37c02e10dc1a5c9f14bb490d0b86a0cba2bbc6f52768a (from https://www.govinfo.gov/content/pkg/FR-2005-08-23/pdf/05-16709.pdf)
- Federal Register: https://www.federalregister.gov/documents/2005/08/23/05-16709/airworthiness-directives-general-electric-company-cf34-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DDE0D13C5884624E862570660067B6F6.0001
- Page: https://openairdocs.org/proposed/2000-NE-42-AD

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) for General Electric Company (GE) CF34-1A, -3A, -3A1, - 3A2, -3B, and -3B1 turbofan engines. That AD currently requires a onetime inspection, and if necessary replacing certain fan disks for electrical arc-out indications. That AD also reduces the life limit of certain fan disks. This proposed AD would require the same actions and adds one disk part number (P/N) and serial number (SN) to the affected fan disks. This proposed AD results from an error in the first part number and serial number listed in Table 1 of the original AD. We are proposing this AD to prevent rupture of the fan disk due to cracks that initiate at an electrical arc-out, which could result in an uncontained failure of the engine.

## Notices in this docket

- Aug 23, 2005: Notice of proposed rulemaking (NPRM). (first notice), FR document 05-16709, comments due Oct 24, 2005 (https://www.federalregister.gov/documents/2005/08/23/05-16709/airworthiness-directives-general-electric-company-cf34-series-turbofan-engines)

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