# Proposed AD FAA-2022-0989: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-23-09
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 9, 2022, 87 FR 55319
- Comments due: October 24, 2022
- Became: [AD 2022-23-09](https://openairdocs.org/ad/2022-23-09)
- Docket: FAA-2022-0989 (https://www.regulations.gov/docket/FAA-2022-0989, where comments are filed)
- Project: AD-2022-00468-E
- FR document: 2022-19400
- Official PDF: https://openairdocs.org/files/sha256/77/a3/77a3ac6b8133aabd71fa2957ba8046f0057219e0cb7cc0f8471ce59ca3e2c7dc (from https://www.govinfo.gov/content/pkg/FR-2022-09-09/pdf/2022-19400.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/09/09/2022-19400/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-19400-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0989

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) GE90-90B, GE90-94B, GE90- 110B1, and GE90-115B model turbofan engines. This proposed AD was prompted by a manufacturer investigation that revealed that certain high-pressure turbine (HPT) stage 1 disks, HPT stage 2 disks, and stages 7-9 compressor rotor spools were manufactured from powder metal material suspected to contain iron inclusion. This proposed AD would require the replacement of the affected HPT stage 1 disks, HPT stage 2 disks, 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 9, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-19400, comments due Oct 24, 2022 (https://www.federalregister.gov/documents/2022/09/09/2022-19400/airworthiness-directives-general-electric-company-turbofan-engines)

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