# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2017-07-21 · Effective 2017-08-25 · 82 FR 33782
## Document
- **Document number:** 2017-14929
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 82 FR 33782
- **Publication date:** 2017-07-21
- **Effective date:** 2017-08-25
- **FAA docket:** Docket No. FAA-2016-9501
## Abstract

We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This AD was prompted by reports of uncommanded altitude display changes in the mode control panel (MCP) altitude window. This AD requires replacing the existing MCP with a new MCP having a different part number. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/07/21/2017-14929/airworthiness-directives-the-boeing-company-airplanes)
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