# Airworthiness Directives; General Electric Company CF34-10E2A1; CF34-10E5; CF34-10E5A1; CF34-10E6; CF34-10E6A1; CF34-10E7; and CF34-10E7-B Turbofan Engines
> **Rule** · Final rule. · Published 2011-08-22 · Effective 2011-09-26 · 76 FR 52215
## Document
- **Document number:** 2011-21313
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 76 FR 52215
- **Publication date:** 2011-08-22
- **Effective date:** 2011-09-26
- **FAA docket:** Docket No. FAA-2011-0187
## Abstract

We are adopting a new airworthiness directive (AD) for the products listed above with certain part number (P/N) fan rotor spinners installed. This AD requires 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 AD was prompted by a fan rotor spinner support found cracked at the attachment lugs. We are issuing 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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/08/22/2011-21313/airworthiness-directives-general-electric-company-cf34-10e2a1-cf34-10e5-cf34-10e5a1-cf34-10e6)
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