# Airworthiness Directives; General Electric Company Turbofan Engines
> **Rule** · Final rule. · Published 2021-12-21 · Effective 2022-01-25 · 86 FR 72178
## Document
- **Document number:** 2021-27480
- **Category:** airworthiness
- **Manufacturer:** General Electric Company Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 72178
- **Publication date:** 2021-12-21
- **Effective date:** 2022-01-25
- **FAA docket:** Docket No. FAA-2021-0869
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CF34-8C and CF34-8E model turbofan engines. This AD was prompted by a report of a quality escape during the manufacturing of a high-pressure turbine (HPT) rotor stage 1 disk. This AD requires removing the HPT rotor stage 1 disk from service and replacing the HPT rotor stage 1 disk with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/12/21/2021-27480/airworthiness-directives-general-electric-company-turbofan-engines)
---
*AI Analytics · CC0 1.0*