# Proposed AD 98-NM-25-AD: Dassault Model Mystere-Falcon 200, Fan Jet Falcon, and Mystere-Falcon 20 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 98-13-15
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 20, 1998, 63 FR 19427
- Comments due: May 20, 1998
- Became: [AD 98-13-15](https://openairdocs.org/ad/98-13-15)
- Docket: 98-NM-25-AD
- FR document: 98-10278
- Official PDF: https://openairdocs.org/files/sha256/7b/2f/7b2f419a383b2f15861ccedba83e9d29965d4409cc1a104f9787778818a9d81c (from https://www.govinfo.gov/content/pkg/FR-1998-04-20/pdf/98-10278.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/04/20/98-10278/airworthiness-directives-dassault-model-mystere-falcon-200-fan-jet-falcon-and-mystere-falcon-20
- Page: https://openairdocs.org/proposed/98-NM-25-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all Dassault Model Mystere-Falcon 200, Fan Jet Falcon, and Mystere-Falcon 20 series airplanes. This proposal would require repetitive inspections to detect cracks at the attaching holes of the wing-to-fuselage fairings and to ensure tightness of the attaching screws; and repair of any discrepancy. This proposal also would require installation of cupwashers under the vertical seams of the upper fairings. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent loss of the wing-to-fuselage upper fairings during flight, which could result in the fairings impacting the engines or tail sections, and consequent reduced controllability of the airplane.

## Notices in this docket

- Apr 20, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-10278, comments due May 20, 1998 (https://www.federalregister.gov/documents/1998/04/20/98-10278/airworthiness-directives-dassault-model-mystere-falcon-200-fan-jet-falcon-and-mystere-falcon-20)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.