# Proposed AD FAA-2023-0663: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-17-08
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 13, 2023, 88 FR 22383
- Comments due: May 30, 2023
- Became: [AD 2023-17-08](https://openairdocs.org/ad/2023-17-08)
- Docket: FAA-2023-0663 (https://www.regulations.gov/docket/FAA-2023-0663, where comments are filed)
- Project: AD-2023-00020-E
- FR document: 2023-07648
- Official PDF: https://openairdocs.org/files/sha256/02/38/0238bc4966d80673a4b8c8a96afdeaf89caa5ea95847ac94084779830804ec0c (from https://www.govinfo.gov/content/pkg/FR-2023-04-13/pdf/2023-07648.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/04/13/2023-07648/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-07648-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-0663

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) GEnx-1B and GEnx-2B model turbofan engines. This proposed AD was prompted by a manufacturer investigation that revealed that certain stages 6-10 compressor rotor spools and forward seals were manufactured from powder metal material suspected to contain iron inclusion. This proposed AD would require the replacement of the affected stages 6-10 compressor rotor spools and forward seals. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 13, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-07648, comments due May 30, 2023 (https://www.federalregister.gov/documents/2023/04/13/2023-07648/airworthiness-directives-general-electric-company-turbofan-engines)

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