# Airworthiness Directives; The Boeing Company Model 767-200, -300, and -300F Series Airplanes
> **Rule** · Final rule. · Published 2010-08-05 · Effective 2010-09-09 · 75 FR 47180
## Document
- **Document number:** 2010-18623
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 75 FR 47180
- **Publication date:** 2010-08-05
- **Effective date:** 2010-09-09
- **FAA docket:** Docket No. FAA-2010-0044
## Abstract

We are adopting a new airworthiness directive (AD) for certain Model 767-200, -300, and -300F series airplanes. This AD requires inspecting to verify the part number of the low-pressure flex-hoses of the flightcrew and supernumerary oxygen system installed under the oxygen mask stowage box at flightcrew and supernumerary oxygen mask locations, and replacing the flex-hose with a new non-conductive low- pressure flex-hose if necessary. This AD results from reports of low- pressure flex-hoses of the flightcrew oxygen system that burned through due to inadvertent electrical current from a short circuit in an adjacent audio select panel. We are issuing this AD to prevent inadvertent electrical current, which can cause the low-pressure flex- hoses used in the flightcrew and supernumerary oxygen systems to melt or burn, resulting in oxygen system leakage and smoke or fire.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2010/08/05/2010-18623/airworthiness-directives-the-boeing-company-model-767-200--300-and--300f-series-airplanes)
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