# Airworthiness Directives; General Electric Company (GE) Turbofan Engines
> **Rule** · Final rule. · Published 2012-03-01 · Effective 2012-04-05 · 77 FR 12444
## Document
- **Document number:** 2012-4747
- **Category:** airworthiness
- **Manufacturer:** General Electric Company (GE) Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 12444
- **Publication date:** 2012-03-01
- **Effective date:** 2012-04-05
- **FAA docket:** Docket No. FAA-2011-0982
## Abstract

We are adopting a new airworthiness directive (AD) for all GE CF6-80C2 model turbofan engines, including engines marked on the engine data plate as CF6-80C2B7F1. This AD was prompted by a report of a supplier shipping a batch of nonconforming No. 3 bearing packings that had incorrect cooling holes and by subsequent reports of nonconforming No. 3 bearing packings being installed on engines in service. This AD requires a one-time inspection of the No. 3 bearing packing for an incorrect cooling hole size and, if it is found nonconforming, removing the packing and removing certain engine rotating life-limited parts (LLPs), if they were operated with unacceptable rotor bore cooling flow for a specified number of cycles. We are issuing this AD to prevent an uncontained failure of the high-pressure compressor (HPC) rotor or the low-pressure turbine (LPT) rotor, or both, which could cause damage to the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/03/01/2012-4747/airworthiness-directives-general-electric-company-ge-turbofan-engines)
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