# Proposed AD FAA-2021-1016: General Electric Company Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-03-19
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: November 29, 2021, 86 FR 67669
- Comments due: January 13, 2022
- Became: [AD 2022-03-19](https://openairdocs.org/ad/2022-03-19)
- Docket: FAA-2021-1016 (https://www.regulations.gov/docket/FAA-2021-1016, where comments are filed)
- Project: AD-2021-00625-E
- FR document: 2021-25870
- Official PDF: https://openairdocs.org/files/sha256/1c/ad/1cad20d5e30d9c4ff0911d19c15ff8c7a895e865f07fda82a1285d47a0a8b8eb (from https://www.govinfo.gov/content/pkg/FR-2021-11-29/pdf/2021-25870.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/11/29/2021-25870/airworthiness-directives-general-electric-company-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2021-25870-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2021-1016

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all General Electric Company (GE) Passport 20-17BB1A, Passport 20- 18BB1A, and Passport 20-19BB1A model turbofan engines. This proposed AD was prompted by a report of a manufacturing quality escape that requires a reduction to the life limit of certain high-pressure turbine (HPT) rotor stage 1 disks. This proposed AD would require revising the Airworthiness Limitations section (ALS) of the GE Passport 20 Line Maintenance Manual and the operator's existing approved continuous airworthiness maintenance program (CAMP) to incorporate a reduced life limit for certain HPT rotor stage 1 disks. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Nov 29, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-25870, comments due Jan 13, 2022 (https://www.federalregister.gov/documents/2021/11/29/2021-25870/airworthiness-directives-general-electric-company-turbofan-engines)

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