# Airworthiness Directives; CFM International, S.A. Engines
> **Rule** · Final rule. · Published 2024-05-06 · Effective 2024-06-10 · 89 FR 37111
## Document
- **Document number:** 2024-09564
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 89 FR 37111
- **Publication date:** 2024-05-06
- **Effective date:** 2024-06-10
- **FAA docket:** Docket No. FAA-2024-0030
## Abstract

The FAA is adopting a new airworthiness directive (AD) for CFM International, S.A. (CFM) Model LEAP-1A23, LEAP-1A24, LEAP-1A24E1, LEAP-1A26, LEAP-1A26CJ, LEAP-1A26E1, LEAP-1A29, LEAP-1A29CJ, LEAP-1A30, LEAP-1A32, LEAP-1A33, LEAP-1A33B2, and LEAP-1A35A engines. This AD was prompted by detection of melt-related freckles in the billet, which may reduce the life of certain high-pressure turbine (HPT) rotor interstage seals. This AD requires removing the affected HPT rotor interstage seals from service and replacing 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/2024/05/06/2024-09564/airworthiness-directives-cfm-international-sa-engines)
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