# Proposed AD FAA-2025-1364: General Electric Company Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-25-07
- Products: General Electric Company GE
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 29, 2025, 90 FR 35642
- Comments due: September 12, 2025
- Became: [AD 2025-25-07](https://openairdocs.org/ad/2025-25-07)
- Docket: FAA-2025-1364 (https://www.regulations.gov/docket/FAA-2025-1364, where comments are filed)
- Project: AD-2024-00613-E
- FR document: 2025-14287
- Official PDF: https://openairdocs.org/files/sha256/ef/04/ef04bae153df35e2e53863c900f9161dbd3e998e43ebe3764ef29eb47c95bb85 (from https://www.govinfo.gov/content/pkg/FR-2025-07-29/pdf/2025-14287.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/07/29/2025-14287/airworthiness-directives-general-electric-company-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-14287-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-1364

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) Model GE90-90B, GE90-94B, GE90-110B1, and GE90-115B engines. This proposed AD was prompted by a manufacturer investigation that revealed certain high-pressure turbine (HPT) stage 1 and HPT 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 HPT 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

- Jul 29, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-14287, comments due Sep 12, 2025 (https://www.federalregister.gov/documents/2025/07/29/2025-14287/airworthiness-directives-general-electric-company-engines)

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