# Proposed AD FAA-2017-1206: Pratt & Whitney

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-22-06
- Products: Pratt & Whitney
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 11, 2018, 83 FR 15519
- Comments due: May 29, 2018
- Became: [AD 2018-22-06](https://openairdocs.org/ad/2018-22-06)
- Docket: FAA-2017-1206 (https://www.regulations.gov/docket/FAA-2017-1206, where comments are filed)
- FR document: 2018-07413
- Official PDF: https://openairdocs.org/files/sha256/ef/3e/ef3e8544131ca9e3dec02584d3a7857f728269ca259bc9bb753d4a1842d1e036 (from https://www.govinfo.gov/content/pkg/FR-2018-04-11/pdf/2018-07413.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/04/11/2018-07413/airworthiness-directives-pratt-and-whitney
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AA6CA8BC46C202298625826D005DA408.0001
- Page: https://openairdocs.org/proposed/FAA-2017-1206

## Summary

We propose to adopt a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW2037, PW2037M, and PW2040 turbofan engines. This proposed AD was prompted by an uncommanded high thrust event that occurred during approach on January 16, 2016, and during landing on April 6, 2016. This proposed AD would require removal of the metering valve pilot valve (MVPV) within certain fuel control units (FCUs) and the MVPV's replacement with a part eligible for installation. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 11, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-07413, comments due May 29, 2018 (https://www.federalregister.gov/documents/2018/04/11/2018-07413/airworthiness-directives-pratt-and-whitney)

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