# Proposed AD FAA-2012-0104: The Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-13-05
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 7, 2012, (Federal Register Volume 77, Number 26 (Wednesday, February 8, 2012))
- Comments due: March 25, 2012
- Became: [AD 2012-13-05](https://openairdocs.org/ad/2012-13-05)
- Docket: FAA-2012-0104 (https://www.regulations.gov/docket/FAA-2012-0104, where comments are filed)
- Project: 2011-NM-279-AD)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6FDF9E822956B4778625799E004C94A4.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0104

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This proposed AD was prompted by a report indicating that a fire originated near the first officer's area, which caused extensive damage to the flight deck. This proposed AD would require replacing the low-pressure oxygen hoses with non-conductive low-pressure oxygen hoses in the flight compartment. We are proposing this AD to prevent electrical current from passing through the low- pressure oxygen hose internal anti-collapse spring, which can cause the low-pressure oxygen hose to melt or burn, and a consequent oxygen-fed fire in the flight compartment.

## Notices in this docket

- Feb 7, 2012: Notice of proposed rulemaking (NPRM). (first notice), comments due Mar 25, 2012 (https://drs.faa.gov/browse/excelExternalWindow/6FDF9E822956B4778625799E004C94A4.0001)

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