# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2020-03-17 · Effective 2020-04-21 · 85 FR 15056
## Document
- **Document number:** 2020-05362
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 15056
- **Publication date:** 2020-03-17
- **Effective date:** 2020-04-21
- **FAA docket:** Docket No. FAA-2019-0974
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2017-15- 01, which applied to certain The Boeing Company Model 777 airplanes. AD 2017-15-01 required replacing the existing mode control panel (MCP) with a new MCP having a different part number. This AD retains the requirements of AD 2017-15-01, expands the applicability to include certain other airplanes, and adds a new requirement for certain airplanes to identify and replace the affected parts. This AD was prompted by a determination that the affected parts may be installed on airplanes outside of the original applicability of AD 2017-15-01. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/03/17/2020-05362/airworthiness-directives-the-boeing-company-airplanes)
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