# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2022-08-16 · Effective 2022-09-20 · 87 FR 50235
## Document
- **Document number:** 2022-17436
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 50235
- **Publication date:** 2022-08-16
- **Effective date:** 2022-09-20
- **FAA docket:** Docket No. FAA-2021-1177
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. This AD was prompted by reports of burned Boeing Material Specification (BMS) 8-39 urethane foam, which is a material with fire-retardant properties that deteriorate with age. This AD requires replacing certain BMS 8-39 foam pads with Nomex felt in certain areas, removing certain BMS 8-39 foam pads in a certain area (which includes a general visual inspection to find BMS 8-39 foam pads), and inspecting the corner seals to determine if the corner seals were replaced, and replacing affected corner seals. This AD also prohibits the installation of BMS 8-39 urethane foam seal in certain locations. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/08/16/2022-17436/airworthiness-directives-the-boeing-company-airplanes)
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