# Proposed AD FAA-2010-0046: The Boeing Company Model 737-300, -400, -500, -600, -700, and -800 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2010-16-06
- Products: Boeing
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: January 22, 2010, 75 FR 3662
- Comments due: March 8, 2010
- Became: [AD 2010-16-06](https://openairdocs.org/ad/2010-16-06)
- Docket: FAA-2010-0046 (https://www.regulations.gov/docket/FAA-2010-0046, where comments are filed)
- Project: 2009-NM-086-AD
- FR document: 2010-1176
- Official PDF: https://openairdocs.org/files/sha256/d7/c8/d7c875fbe8cec54d1f47d7006fc5bad430e46a97c21cb37510bc52f2feec976b (from https://www.govinfo.gov/content/pkg/FR-2010-01-22/pdf/2010-1176.pdf)
- Federal Register: https://www.federalregister.gov/documents/2010/01/22/2010-1176/airworthiness-directives-the-boeing-company-model-737-300--400--500--600--700-and--800-series
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C2AF5D3170A9E90E862576B3004EB902.0001
- Page: https://openairdocs.org/proposed/FAA-2010-0046

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Model 737-300, -400, -500, -600, -700, and -800 series airplanes. This proposed AD would require inspecting to verify the part number of the low-pressure flex-hoses of the crew oxygen system installed under the oxygen mask stowage boxes located within the flight deck, and replacing the flex-hose with a new non-conductive low- pressure flex-hose if necessary. This proposed AD results from reports of low-pressure flex-hoses of the crew oxygen system that burned through due to inadvertent electrical current from a short circuit in the audio select panel. We are proposing this AD to prevent inadvertent electrical current, which can cause the low-pressure flex-hoses of the crew oxygen system to melt or burn, causing oxygen system leakage and smoke or fire.

## Notices in this docket

- Jan 22, 2010: Notice of proposed rulemaking (NPRM). (first notice), FR document 2010-1176, comments due Mar 8, 2010 (https://www.federalregister.gov/documents/2010/01/22/2010-1176/airworthiness-directives-the-boeing-company-model-737-300--400--500--600--700-and--800-series)

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