# Proposed AD FAA-2022-0978: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-25-20
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 9, 2022, 87 FR 55328
- Comments due: October 24, 2022
- Became: [AD 2022-25-20](https://openairdocs.org/ad/2022-25-20)
- Docket: FAA-2022-0978 (https://www.regulations.gov/docket/FAA-2022-0978, where comments are filed)
- Project: AD-2022-00460-E
- FR document: 2022-19397
- Official PDF: https://openairdocs.org/files/sha256/55/12/55122f7d3cd11134abe68ba559e89e1d473911b2af9ed27a5cd613f82f6b640e (from https://www.govinfo.gov/content/pkg/FR-2022-09-09/pdf/2022-19397.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/09/09/2022-19397/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-19397-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0978

## 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 high-pressure turbine (HPT) stage 2 disks, forward seals, and stages 6-10 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 2 disks, forward seals, and stages 6-10 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 2022-19397, comments due Oct 24, 2022 (https://www.federalregister.gov/documents/2022/09/09/2022-19397/airworthiness-directives-general-electric-company-turbofan-engines)

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