# Proposed AD FAA-2012-0102: Various Transport Category Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2012-11-09
- Products: Transport Category
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 27, 2012, 77 FR 11418
- Comments due: April 12, 2012
- Became: [AD 2012-11-09](https://openairdocs.org/ad/2012-11-09)
- Docket: FAA-2012-0102 (https://www.regulations.gov/docket/FAA-2012-0102, where comments are filed)
- Project: 2012-NM-004-AD
- FR document: 2012-4031
- Official PDF: https://openairdocs.org/files/sha256/2d/fb/2dfbed68bdacbcafa26daf4b3171bfa36ab2cb4cd376f3ddd884ecff0253b00b (from https://www.govinfo.gov/content/pkg/FR-2012-02-27/pdf/2012-4031.pdf)
- Federal Register: https://www.federalregister.gov/documents/2012/02/27/2012-4031/airworthiness-directives-various-transport-category-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/68A49A0F8A17CDAC862579B1004D13AE.0001
- Page: https://openairdocs.org/proposed/FAA-2012-0102

## Summary

We propose to supersede an existing airworthiness directive (AD) that applies to certain transport category airplanes. The existing AD currently requires either activating all chemical oxygen generators in the lavatories until the generator oxygen supply is expended, or removing the oxygen generator(s); and, for each chemical oxygen generator, after the generator is expended (or removed), removing or restowing the oxygen masks and closing the mask dispenser door. Since we issued that AD, we have identified means to provide a supplemental oxygen system that does not have the unsafe condition. This proposed AD would require installing a supplemental oxygen system in affected lavatories, which would terminate the requirements of the existing AD. We are proposing this AD to eliminate a hazard that could jeopardize flight safety, and to ensure that all lavatories have a supplemental oxygen supply.

## Notices in this docket

- Feb 27, 2012: Notice of proposed rulemaking (NPRM). (first notice), FR document 2012-4031, comments due Apr 12, 2012 (https://www.federalregister.gov/documents/2012/02/27/2012-4031/airworthiness-directives-various-transport-category-airplanes)

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