# Airworthiness Directives; Robinson Helicopter Company (Robinson) Model R44 Helicopters
> **Rule** · Final rule. · Published 1999-06-24 · Effective 1999-07-29 · 64 FR 33745
## Document
- **Document number:** 99-15903
- **Category:** airworthiness
- **Manufacturer:** Robinson Helicopter Company (Robinson) Model R44
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 64 FR 33745
- **Publication date:** 1999-06-24
- **Effective date:** 1999-07-29
- **FAA docket:** Docket No. 98-SW-71-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to Robinson Model R44 helicopters, that requires installing a shutoff clamp on the auxiliary fuel tank sump drain tube (drain tube) and a placard decal to alert operators as to the proper use of the auxiliary fuel tank drain. This amendment is prompted by a report of fuel leaking from a drain tube opening in the area of the horizontal and vertical firewalls. The actions specified by this AD are intended to prevent fuel leaks from the drain tube that could cause a fire and subsequent loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1999/06/24/99-15903/airworthiness-directives-robinson-helicopter-company-robinson-model-r44-helicopters)
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