# Airworthiness Directives; Engine Alliance Engines
> **Rule** · Final rule; request for comments. · Published 2023-06-09 · Effective 2023-06-26 · 88 FR 37760
## Document
- **Document number:** 2023-12287
- **Category:** airworthiness
- **Manufacturer:** Engine Alliance
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 88 FR 37760
- **Publication date:** 2023-06-09
- **Effective date:** 2023-06-26
- **FAA docket:** Docket No. FAA-2023-1205
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Engine Alliance (EA) Model GP7270, GP7272, and GP7277 engines. This AD was prompted by a manufacturer investigation that revealed that certain high-pressure turbine (HPT) interstage seals were manufactured from material suspected to contain iron inclusion. This AD requires replacement of the affected HPT interstage seals. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/06/09/2023-12287/airworthiness-directives-engine-alliance-engines)
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