# Proposed AD FAA-2023-1647: General Electric Company Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-26-07
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 5, 2023, 88 FR 60603
- Comments due: October 20, 2023
- Became: [AD 2023-26-07](https://openairdocs.org/ad/2023-26-07)
- Docket: FAA-2023-1647 (https://www.regulations.gov/docket/FAA-2023-1647, where comments are filed)
- Project: AD-2023-00487-E
- FR document: 2023-18858
- Official PDF: https://openairdocs.org/files/sha256/cc/d5/ccd500eeb6bfe2b062cb3f0513fd129b7366652e1f571fefaace594b7b218954 (from https://www.govinfo.gov/content/pkg/FR-2023-09-05/pdf/2023-18858.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/09/05/2023-18858/airworthiness-directives-general-electric-company-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-18858-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1647

## 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 disks, HPT stage 2 disks, forward HPT rotor seals, interstage HPT seals, and stages 7-9 compressor rotor spools were manufactured from powder metal material suspected to contain iron inclusion. This proposed AD would require replacement of affected HPT stage 1 disks, HPT stage 2 disks, forward HPT rotor seals, interstage HPT seals, and stages 7-9 compressor rotor spools. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 5, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-18858, comments due Oct 20, 2023 (https://www.federalregister.gov/documents/2023/09/05/2023-18858/airworthiness-directives-general-electric-company-engines)

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