# Proposed AD FAA-2021-0187: CFM International, S.A. Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-11-21
- Products: CFM International
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 23, 2021, 86 FR 15443
- Comments due: May 7, 2021
- Became: [AD 2021-11-21](https://openairdocs.org/ad/2021-11-21)
- Docket: FAA-2021-0187 (https://www.regulations.gov/docket/FAA-2021-0187, where comments are filed)
- Project: AD-2020-01664-E
- FR document: 2021-05591
- Official PDF: https://openairdocs.org/files/sha256/cc/b0/ccb036d0be24e1f7c84ed82a0043a893830bccc8175fd1ff15ff25d9e94b99bc (from https://www.govinfo.gov/content/pkg/FR-2021-03-23/pdf/2021-05591.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/03/23/2021-05591/airworthiness-directives-cfm-international-sa-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6792560587330CEE862586A10057A290.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0187

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain CFM International, S.A. (CFM) 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 model turbofan engines. This proposed AD was prompted by a report of a manufacturing quality escape found during an inspection of a high- pressure turbine (HPT) case. This proposed AD would require the removal from service of the affected HPT case. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 23, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-05591, comments due May 7, 2021 (https://www.federalregister.gov/documents/2021/03/23/2021-05591/airworthiness-directives-cfm-international-sa-turbofan-engines)

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