# Airworthiness Directives; General Electric Company Turbofan Engines
> **Rule** · Final rule. · Published 2022-12-12 · Effective 2023-01-17 · 87 FR 75918
## Document
- **Document number:** 2022-26831
- **Category:** airworthiness
- **Manufacturer:** General Electric Company Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 75918
- **Publication date:** 2022-12-12
- **Effective date:** 2023-01-17
- **FAA docket:** Docket No. FAA-2022-0989
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) GE90-90B, GE90-94B, GE90-110B1, and GE90-115B model turbofan engines. This AD was prompted by a manufacturer investigation that revealed that certain high-pressure turbine (HPT) stage 1 disks, HPT stage 2 disks, and stages 7-9 compressor rotor spools were manufactured from powder metal material suspected to contain iron inclusion. This AD requires the replacement of the affected HPT stage 1 disks, HPT stage 2 disks, and stages 7-9 compressor rotor spools. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/12/12/2022-26831/airworthiness-directives-general-electric-company-turbofan-engines)
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