# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2020-03-20 · Effective 2020-04-24 · 85 FR 15930
## Document
- **Document number:** 2020-05709
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 15930
- **Publication date:** 2020-03-20
- **Effective date:** 2020-04-24
- **FAA docket:** Docket No. FAA-2019-0602
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2010-26- 01, which applied to certain The Boeing Company Model 777-200 series airplanes. AD 2010-26-01 required installing a new insulation blanket on the latch beam firewall of each thrust reverser (T/R) half. This AD requires retaining the requirements of 2010-26-01. This AD also adds airplanes to the applicability. For those airplanes, this AD requires an inspection to determine if the installed T/R has an affected part number and, if an affected part number is found, installation of a new insulation blanket. This AD was prompted by a report of an in-flight shutdown due to an engine fire indication and a determination that additional airplanes are affected. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/03/20/2020-05709/airworthiness-directives-the-boeing-company-airplanes)
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