# Airworthiness Directives; Boeing Model 777-200 and -300 Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2002-04-02 · Effective 2002-04-17 · 67 FR 15470
## Document
- **Document number:** 02-7414
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 777-200 and -300 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 67 FR 15470
- **Publication date:** 2002-04-02
- **Effective date:** 2002-04-17
- **FAA docket:** Docket No. 2002-NM-22-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 777-200 and -300 series airplanes. This action requires replacement of the switch guard on the switch used to control the passenger and/or therapeutic oxygen system with a new, improved switch guard. This action is necessary to prevent displacement of the passenger/therapeutic oxygen switch, which could result in the unavailability of supplemental/therapeutic oxygen and possible incapacitation of passengers during flight. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2002/04/02/02-7414/airworthiness-directives-boeing-model-777-200-and--300-series-airplanes)
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