# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2018-11-27 · Effective 2019-01-02 · 83 FR 60759
## Document
- **Document number:** 2018-25394
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 83 FR 60759
- **Publication date:** 2018-11-27
- **Effective date:** 2019-01-02
- **FAA docket:** Docket No. FAA-2018-0489
## Abstract

We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 747-8 and 747-8F series airplanes. This AD was prompted by a report that flightcrew oxygen masks did not function as designed during flight testing. This AD requires an inspection to determine if certain oxygen masks/regulators are installed, and replacement if necessary. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/11/27/2018-25394/airworthiness-directives-the-boeing-company-airplanes)
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