# Airworthiness Directives; Robinson Helicopter Company (Robinson)
> **Rule** · Final rule. · Published 2013-10-01 · Effective 2013-11-05 · 78 FR 60185
## Document
- **Document number:** 2013-23094
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 60185
- **Publication date:** 2013-10-01
- **Effective date:** 2013-11-05
- **FAA docket:** Docket No. FAA-2013-0380
## Abstract

We are adopting a new airworthiness directive (AD) for Robinson Model R22, R22 Alpha, R22 Beta, and R22 Mariner helicopters with certain fuel shut-off valves installed. This AD requires replacing the fuel shut-off valve with a newer design fuel shut-off valve. This AD is prompted by three accidents that occurred because the fuel shut- off valve was inadvertently moved to the "off" position. These actions are intended to prevent inadvertent closing of the fuel valve, which could result in engine power loss from which a safe landing may not be possible.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/10/01/2013-23094/airworthiness-directives-robinson-helicopter-company-robinson)
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