# Proposed AD FAA-2011-0187: General Electric Company CF34-10E2A1; CF34-10E5, CF34-10E5A1; CF34-10E6; CF34-10E6A1; CF34-10E7; and CF34- 10E7-B Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2011-18-02
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 11, 2011, 76 FR 27282
- Comments due: June 27, 2011
- Became: [AD 2011-18-02](https://openairdocs.org/ad/2011-18-02)
- Docket: FAA-2011-0187 (https://www.regulations.gov/docket/FAA-2011-0187, where comments are filed)
- Project: 2011-NE-07-AD
- FR document: 2011-11481
- Official PDF: https://openairdocs.org/files/sha256/8e/c7/8ec7449ace6de24647a9c9b2c9274da8aded31dffe7a14d5171ebdd1d479c051 (from https://www.govinfo.gov/content/pkg/FR-2011-05-11/pdf/2011-11481.pdf)
- Federal Register: https://www.federalregister.gov/documents/2011/05/11/2011-11481/airworthiness-directives-general-electric-company-cf34-10e2a1-cf34-10e5-cf34-10e5a1-cf34-10e6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9492EE4208A0475E8625788D004B1623.0001
- Page: https://openairdocs.org/proposed/FAA-2011-0187

## Summary

We propose to adopt a new airworthiness directive (AD) for the products listed above with certain part number (P/N) fan rotor spinners installed. This proposed AD would require removing from service certain fan rotor blade retainers, and removing from service the fan rotor spinner support that was installed with those fan rotor blade retainers. This proposed AD was prompted by a fan rotor spinner support found cracked at the attachment lugs. We are proposing this AD to prevent high-cycle fatigue cracking of the fan rotor spinner support attachment lugs, leading to separation of the fan rotor spinner assembly, uncontained failure of the engine, and damage to the airplane.

## Notices in this docket

- May 11, 2011: Notice of proposed rulemaking (NPRM). (first notice), FR document 2011-11481, comments due Jun 27, 2011 (https://www.federalregister.gov/documents/2011/05/11/2011-11481/airworthiness-directives-general-electric-company-cf34-10e2a1-cf34-10e5-cf34-10e5a1-cf34-10e6)

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