# Airworthiness Directives; DASSAULT AVIATION Airplanes
> **Rule** · Final rule. · Published 2012-03-30 · Effective 2012-05-04 · 77 FR 19074
## Document
- **Document number:** 2012-7372
- **Category:** airworthiness
- **Manufacturer:** DASSAULT AVIATION
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 19074
- **Publication date:** 2012-03-30
- **Effective date:** 2012-05-04
- **FAA docket:** Docket No. FAA-2011-1164
## Abstract

We are adopting a new airworthiness directive (AD) for all DASSAULT AVIATION Model MYSTERE-FALCON 900 airplanes. This AD was prompted by multiple reports of fuel leakage from a defective fuel high-level sensor located in the wing front spar. This AD requires inspecting to determine fuel quantity sensors part numbers and replacing of certain fuel quantity sensors with new fuel quantity sensors. We are issuing this AD to prevent internal fuel leakage with significant fuel vapors, which could result in a fire hazard.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/03/30/2012-7372/airworthiness-directives-dassault-aviation-airplanes)
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