# Proposed AD FAA-2020-1179: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-14-11
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 22, 2021, 86 FR 10496
- Comments due: April 8, 2021
- Became: [AD 2021-14-11](https://openairdocs.org/ad/2021-14-11)
- Docket: FAA-2020-1179 (https://www.regulations.gov/docket/FAA-2020-1179, where comments are filed)
- Project: AD-2020-00818-E
- FR document: 2021-01814
- Official PDF: https://openairdocs.org/files/sha256/b2/89/b28932855182e6bca6bf3ef5bc0644cd454d735149c14bfb04f72434491382ed (from https://www.govinfo.gov/content/pkg/FR-2021-02-22/pdf/2021-01814.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/02/22/2021-01814/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F5E0A7D19ED4703D8625868500558422.0001
- Page: https://openairdocs.org/proposed/FAA-2020-1179

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all General Electric Company (GE) CF6-80A, CF6-80A1, CF6-80A2, CF6- 80A3, CF6-80C2A1, CF6-80C2A2, CF6-80C2A3, CF6-80C2A5, CF6-80C2A5F, CF6- 80C2A8, CF6-80C2B1, CF6-80C2B1F, CF6-80C2B1F1, CF6-80C2B1F2, CF6- 80C2B2, CF6-80C2B2F, CF6-80C2B3F, CF6-80C2B4, CF6-80C2B4F, CF6-80C2B5F, CF6-80C2B6, CF6-80C2B6F, CF6-80C2B6FA, CF6-80C2B7F, CF6-80C2B8F, CF6- 80C2D1F, CF6-80C2K1F and CF6-80C2L1F model turbofan engines. This proposed AD was prompted by an inspection by the manufacturer that revealed cracking of the high-pressure turbine (HPT) rotor stage 1 disk. This proposed AD would require visual inspection and fluorescent penetrant inspection (FPI) of the HPT thermal shield and, if cracking is detected, removal from service of the HPT thermal shield, HPT rotor stage 1 disk and HPT rotor stage 2 disk. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 22, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-01814, comments due Apr 8, 2021 (https://www.federalregister.gov/documents/2021/02/22/2021-01814/airworthiness-directives-general-electric-company-turbofan-engines)

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