# Proposed AD FAA-2022-0467: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-20-12
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 1, 2022, 87 FR 33071
- Comments due: July 18, 2022
- Became: [AD 2022-20-12](https://openairdocs.org/ad/2022-20-12)
- Docket: FAA-2022-0467 (https://www.regulations.gov/docket/FAA-2022-0467, where comments are filed)
- Project: AD-2022-00174-E
- FR document: 2022-11354
- Official PDF: https://openairdocs.org/files/sha256/8b/01/8b01c7af925ddc0c4f3c5ec9309e8789471bff4a27d1cb16d3cf9d9cb3d2d761 (from https://www.govinfo.gov/content/pkg/FR-2022-06-01/pdf/2022-11354.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/06/01/2022-11354/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-11354-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0467

## 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 the detection of melt-related freckles in the forgings and billets, which may reduce the life of certain compressor discharge pressure (CDP) seals, interstage seals, high-pressure turbine (HPT) rotor stage 2 disks, and stages 6-10 compressor rotor spools. This proposed AD would require revising the airworthiness limitations section (ALS) of the applicable GEnx-1B and GEnx-2B Engine Manual (EM) and the operator's existing approved maintenance program or inspection program, as applicable, to incorporate reduced life limits for these parts. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 1, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-11354, comments due Jul 18, 2022 (https://www.federalregister.gov/documents/2022/06/01/2022-11354/airworthiness-directives-general-electric-company-turbofan-engines)

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