# Proposed AD FAA-2024-0461: CFE Company Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2024-12-03
- Products: CFE
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 8, 2024, 89 FR 16710
- Comments due: April 22, 2024
- Became: [AD 2024-12-03](https://openairdocs.org/ad/2024-12-03)
- Docket: FAA-2024-0461 (https://www.regulations.gov/docket/FAA-2024-0461, where comments are filed)
- Project: AD-2023-00994-E
- FR document: 2024-04870
- Official PDF: https://openairdocs.org/files/sha256/33/7f/337f25ba3ff56777936c43a3523c794820c0581c502046ceaef954a5afa99e57 (from https://www.govinfo.gov/content/pkg/FR-2024-03-08/pdf/2024-04870.pdf)
- Federal Register: https://www.federalregister.gov/documents/2024/03/08/2024-04870/airworthiness-directives-cfe-company-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2024-04870-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2024-0461

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain CFE Company (CFE) Model CFE738-1-1B engines. This proposed AD was prompted by a manufacturer investigation that revealed certain high-pressure turbine (HPT) stage 1 and stage 2 disks were manufactured from powder metal material suspected to contain iron inclusion. This proposed AD would require replacement of affected HPT stage 1 and stage 2 disks with parts eligible for installation. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 8, 2024: Notice of proposed rulemaking (NPRM). (first notice), FR document 2024-04870, comments due Apr 22, 2024 (https://www.federalregister.gov/documents/2024/03/08/2024-04870/airworthiness-directives-cfe-company-engines)

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