# Airworthiness Directives; Dassault Model Mystere Falcon 200 Series Airplanes
> **Rule** · Final rule. · Published 1998-01-28 · Effective 1998-03-04 · 63 FR 4161
## Document
- **Document number:** 98-1971
- **Category:** airworthiness
- **Manufacturer:** Dassault Model Mystere Falcon 200 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 4161
- **Publication date:** 1998-01-28
- **Effective date:** 1998-03-04
- **FAA docket:** Docket No. 97-NM-189-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to all Dassault Model Mystere Falcon 200 series airplanes, that requires reducing the life limit of the polyurethane foam used in the fuselage fuel tanks. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to ensure replacement of the polyurethane foam in the fuselage fuel tanks when it has reached its maximum life limit; polyurethane foam that is not replaced in a timely manner could result in fuel contamination or increased risk of explosion in the fuselage fuel tank.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/01/28/98-1971/airworthiness-directives-dassault-model-mystere-falcon-200-series-airplanes)
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