# Airworthiness Directives; Pratt & Whitney Turbofan Engines
> **Rule** · Final rule. · Published 2018-10-29 · Effective 2018-12-03 · 83 FR 54229
## Document
- **Document number:** 2018-23526
- **Category:** airworthiness
- **Manufacturer:** Pratt & Whitney Turbofan
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 54229
- **Publication date:** 2018-10-29
- **Effective date:** 2018-12-03
- **FAA docket:** Docket No. FAA-2017-1206
## Abstract

We are adopting a new airworthiness directive (AD) for all Pratt & Whitney (PW) PW2037, PW2037M, and PW2040 turbofan engines. This 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 AD requires 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 issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/10/29/2018-23526/airworthiness-directives-pratt-and-whitney-turbofan-engines)
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