# Proposed AD FAA-2014-0174: the Boeing Company Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2014-23-12
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 28, 2014, 79 FR 17457
- Comments due: May 12, 2014
- Became: [AD 2014-23-12](https://openairdocs.org/ad/2014-23-12)
- Docket: FAA-2014-0174 (https://www.regulations.gov/docket/FAA-2014-0174, where comments are filed)
- Project: 2013-NM-212-AD
- FR document: 2014-06911
- Official PDF: https://openairdocs.org/files/sha256/c6/b9/c6b9831bf9ff351d90d1ffc49285095c50451d01fe5db69a2237eb9efa111f9b (from https://www.govinfo.gov/content/pkg/FR-2014-03-28/pdf/2014-06911.pdf)
- Federal Register: https://www.federalregister.gov/documents/2014/03/28/2014-06911/airworthiness-directives-the-boeing-company-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/002F9A821E5D530986257CA90059ED09.0001
- Page: https://openairdocs.org/proposed/FAA-2014-0174

## Summary

We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 airplanes. This proposed AD was prompted by a report indicating that, on a different Boeing airplane model, there was an oxygen-fed fire, which caused extensive damage to the flight deck. This proposed AD would require replacing the low- pressure oxygen hoses with non-conductive hoses in the crew oxygen system. We are proposing this AD to prevent inadvertent electrical current from passing through an internal, anti-collapse spring of the low pressure oxygen hose, which can cause the low-pressure oxygen hose to melt or burn, leading to an oxygen-fed fire and/or smoke beneath the flight compartment in the forward electronics equipment bay.

## Notices in this docket

- Mar 28, 2014: Notice of proposed rulemaking (NPRM). (first notice), FR document 2014-06911, comments due May 12, 2014 (https://www.federalregister.gov/documents/2014/03/28/2014-06911/airworthiness-directives-the-boeing-company-airplanes)

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