# Proposed AD FAA-2017-0505: Zodiac Aerotechnics, Oxygen Mask Regulators

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-21-14
- Products: Zodiac Aerotechnics
- Product type: Appliance
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 25, 2017, 82 FR 44539
- Comments due: November 9, 2017
- Became: [AD 2018-21-14](https://openairdocs.org/ad/2018-21-14)
- Docket: FAA-2017-0505 (https://www.regulations.gov/docket/FAA-2017-0505, where comments are filed)
- FR document: 2017-20267
- Official PDF: https://openairdocs.org/files/sha256/f2/2c/f22c2371b67d5c7d8ef56b8b75c6d3d66d1f57119fe49b9fd51b9a984e8ee6b1 (from https://www.govinfo.gov/content/pkg/FR-2017-09-25/pdf/2017-20267.pdf)
- Federal Register: https://www.federalregister.gov/documents/2017/09/25/2017-20267/airworthiness-directives-zodiac-aerotechnics-oxygen-mask-regulators
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/531D7666F9A2EEFC862581A60054DA81.0001
- Page: https://openairdocs.org/proposed/FAA-2017-0505

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Zodiac Aerotechnics oxygen mask regulators. This proposed AD was prompted by reports that certain silicon harness inflation hoses, installed on certain flight crew quick donning mask harnesses, have shown an unusually high premature rupture rate. This proposed AD would require inspection and replacement of oxygen mask regulator harness inflation hoses. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 25, 2017: Notice of proposed rulemaking (NPRM). (first notice), FR document 2017-20267, comments due Nov 9, 2017 (https://www.federalregister.gov/documents/2017/09/25/2017-20267/airworthiness-directives-zodiac-aerotechnics-oxygen-mask-regulators)

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