# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2017-02-21 · Effective 2017-03-28 · 82 FR 11137
## Document
- **Document number:** 2017-03030
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 82 FR 11137
- **Publication date:** 2017-02-21
- **Effective date:** 2017-03-28
- **FAA docket:** Docket No. FAA-2016-9111
## Abstract

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 757 airplanes. This AD was prompted by reports of single and multiple uncommanded spoiler panel extensions during flight when there was a hydraulic system failure. This AD requires replacing certain spoiler power control units (PCUs) with new or changed PCUs. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/02/21/2017-03030/airworthiness-directives-the-boeing-company-airplanes)
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