# Proposed AD FAA-2019-0596: Pratt & Whitney Turbofan Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2020-04-01
- Products: Pratt & Whitney
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 10, 2019, 84 FR 47445
- Comments due: October 25, 2019
- Became: [AD 2020-04-01](https://openairdocs.org/ad/2020-04-01)
- Docket: FAA-2019-0596 (https://www.regulations.gov/docket/FAA-2019-0596, where comments are filed)
- FR document: 2019-19410
- Official PDF: https://openairdocs.org/files/sha256/0c/c4/0cc452fa45d7544a06c2ce1316a62c075c31646f065d5df81f4093285b3d1fa3 (from https://www.govinfo.gov/content/pkg/FR-2019-09-10/pdf/2019-19410.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/09/10/2019-19410/airworthiness-directives-pratt-and-whitney-turbofan-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E5EBDF509E4BFB87862584710058DD09.0001
- Page: https://openairdocs.org/proposed/FAA-2019-0596

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G-3, PW1524G-3, PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan engines. This proposed AD was prompted by reports of in-flight shutdowns due to oil leaking from the connection between the LP10 oil supply tube and the fuel oil cooler (FOC). This proposed AD would require initial and repetitive gap inspections of the LP10 oil supply tube and the FOC and, if a gap is found, replacement of these parts. This proposed AD further requires removal of these parts at the next engine shop visit. The FAA is proposing an AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 10, 2019: Notice of proposed rulemaking (NPRM). (first notice), FR document 2019-19410, comments due Oct 25, 2019 (https://www.federalregister.gov/documents/2019/09/10/2019-19410/airworthiness-directives-pratt-and-whitney-turbofan-engines)

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