# Proposed AD FAA-2024-0030: CFM International, S.A. Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2024-07-02
- Products: CFM International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 11, 2024, 89 FR 1847
- Comments due: February 26, 2024
- Became: [AD 2024-07-02](https://openairdocs.org/ad/2024-07-02)
- Docket: FAA-2024-0030 (https://www.regulations.gov/docket/FAA-2024-0030, where comments are filed)
- Project: AD-2023-01066-E
- FR document: 2024-00377
- Official PDF: https://openairdocs.org/files/sha256/82/ad/82ad96efcef972e274ae95588e6daae193f74e7a347a70c96b278ad263c9e180 (from https://www.govinfo.gov/content/pkg/FR-2024-01-11/pdf/2024-00377.pdf)
- Federal Register: https://www.federalregister.gov/documents/2024/01/11/2024-00377/airworthiness-directives-cfm-international-sa-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2024-00377-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2024-0030

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for CFM International (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 proposed 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 proposed AD would require removing the affected HPT rotor interstage seals from service and replacing with a part eligible for installation. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jan 11, 2024: Notice of proposed rulemaking (NPRM). (first notice), FR document 2024-00377, comments due Feb 26, 2024 (https://www.federalregister.gov/documents/2024/01/11/2024-00377/airworthiness-directives-cfm-international-sa-engines)

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