# Proposed AD FAA-2020-0557: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-20-13
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: June 8, 2020, 85 FR 35024
- Comments due: July 23, 2020
- Became: [AD 2020-20-13](https://openairdocs.org/ad/2020-20-13)
- Docket: FAA-2020-0557 (https://www.regulations.gov/docket/FAA-2020-0557, where comments are filed)
- Project: AD-2020-00541-E
- FR document: 2020-12157
- Official PDF: https://openairdocs.org/files/sha256/0c/52/0c5245f8410e367acd7aee85a453474e2f047ddb4ec4dfb3f0087ac0e0c2bb99 (from https://www.govinfo.gov/content/pkg/FR-2020-06-08/pdf/2020-12157.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/06/08/2020-12157/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/327903F40377964F86258581004B1BCA.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0557

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2018-15-04, which applies to certain 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- 80C2B2, CF6-80C2B2F, CF6-80C2B4, CF6-80C2B4F, CF6-80C2B5F, CF6-80C2B6, CF6-80C2B6F, CF6-80C2B6FA, CF6-80C2B7F, CF6-80C2D1F, CF6-80C2L1F, and CF6-80C2K1F model turbofan engines. AD 2018-15-04 requires ultrasonic inspection (UI) of high-pressure turbine (HPT) stage 1 and stage 2 disks. Since we issued AD 2018-15-04, GE determined the need to expand the population of affected disks. This proposed AD would retain the required inspections while expanding the population of affected disks. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jun 8, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-12157, comments due Jul 23, 2020 (https://www.federalregister.gov/documents/2020/06/08/2020-12157/airworthiness-directives-general-electric-company-turbofan-engines)

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