# Proposed AD FAA-2008-0821: General Electric Company (GE) CF34-8E Series Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2008-16-01
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 24, 2009, 74 FR 42610
- Comments due: October 23, 2009
- Became: [AD 2008-16-01](https://openairdocs.org/ad/2008-16-01)
- Docket: FAA-2008-0821 (https://www.regulations.gov/docket/FAA-2008-0821, where comments are filed)
- Project: 2008-NE-20-AD
- FR document: E9-20281
- Official PDF: https://openairdocs.org/files/sha256/b0/0c/b00ce54e56cbb7f7e3269c13247c757bc9fd978da87b7d94dadf205fd6a84a15 (from https://www.govinfo.gov/content/pkg/FR-2009-08-24/pdf/E9-20281.pdf)
- Federal Register: https://www.federalregister.gov/documents/2009/08/24/E9-20281/airworthiness-directives-general-electric-company-ge-cf34-8e-series-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2560826E95F784018625761C00495519.0001
- Page: https://openairdocs.org/proposed/FAA-2008-0821

## Summary

The FAA proposes to supersede an existing airworthiness directive (AD) for GE CF34-8E series turbofan engines with certain part number (P/N) full authority digital electronic controls (FADECs) installed. That AD currently requires removing certain P/N FADECs. This proposed superseding AD would require removal of 12 more P/Ns of FADECs. This proposed AD results from 20 additional reports received of loss of thrust control events since AD 2008-16-01 was issued. We are proposing this AD to prevent loss of thrust control of the airplane.

## Notices in this docket

- Aug 24, 2009: Notice of proposed rulemaking (NPRM). (first notice), FR document E9-20281, comments due Oct 23, 2009 (https://www.federalregister.gov/documents/2009/08/24/E9-20281/airworthiness-directives-general-electric-company-ge-cf34-8e-series-turbofan-engines)

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