# Proposed AD FAA-2022-1306: Pratt & Whitney Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-27-04
- Products: Pratt & Whitney
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 25, 2022, 87 FR 64397
- Comments due: December 9, 2022
- Became: [AD 2022-27-04](https://openairdocs.org/ad/2022-27-04)
- Docket: FAA-2022-1306 (https://www.regulations.gov/docket/FAA-2022-1306, where comments are filed)
- Project: AD-2022-01040-E
- FR document: 2022-22761
- Official PDF: https://openairdocs.org/files/sha256/90/8d/908d8e2a4db154cee93a089f786a8fb5d09a9cb426d79cb3d99da2d9d462fcb7 (from https://www.govinfo.gov/content/pkg/FR-2022-10-25/pdf/2022-22761.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/10/25/2022-22761/airworthiness-directives-pratt-and-whitney-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-22761-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-1306

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW1519G, PW1521G, PW1521G-3, PW1521GA, PW1524G, PW1524G-3, PW1525G, and PW1525G-3 model turbofan engines. This proposed AD was prompted by an uncommanded dual engine shutdown upon landing, resulting in compromised braking capability due to the loss of engine power and hydraulic systems. This proposed AD would require replacement of electronic engine control (EEC) full authority digital engine control (FADEC) software with updated software. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 25, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-22761, comments due Dec 9, 2022 (https://www.federalregister.gov/documents/2022/10/25/2022-22761/airworthiness-directives-pratt-and-whitney-turbofan-engines)

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