# Proposed AD FAA-2010-0044: The Boeing Company Model 767-200, -300, and -300F Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-16-04
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 22, 2010, 75 FR 3656
- Comments due: March 8, 2010
- Became: [AD 2010-16-04](https://openairdocs.org/ad/2010-16-04)
- Docket: FAA-2010-0044 (https://www.regulations.gov/docket/FAA-2010-0044, where comments are filed)
- Project: 2009-NM-084-AD
- FR document: 2010-1174
- Official PDF: https://openairdocs.org/files/sha256/1a/91/1a91aca82843bab136ea0381e628b63d0e992cf39c1a9ef88e5d27952c7375d6 (from https://www.govinfo.gov/content/pkg/FR-2010-01-22/pdf/2010-1174.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/01/22/2010-1174/airworthiness-directives-the-boeing-company-model-767-200--300-and--300f-series-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E2CED56004B40DF7862576B3004F1E2F.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0044

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Model 767-200, -300, and -300F series airplanes. This proposed AD would require 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 a flightcrew and supernumerary oxygen mask location, and replacing the flex-hose with a new non-conductive low-pressure flex-hose if necessary. This proposed AD results from reports of a low-pressure flex-hose 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 proposing 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.

## Notices in this docket

- Jan 22, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-1174, comments due Mar 8, 2010 (https://www.federalregister.gov/documents/2010/01/22/2010-1174/airworthiness-directives-the-boeing-company-model-767-200--300-and--300f-series-airplanes)

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