Summary
This document proposes the supersedure of an existing airworthiness directive (AD), applicable to all Dassault Model Falcon 2000 series airplanes, and certain Dassault Model Falcon 900EX and Mystere Falcon 900 series airplanes. That AD currently requires repetitive operational tests of the flap asymmetry detection system to verify proper functioning, and repair, if necessary; repetitive replacement of the inboard flap jackscrews with new or reconditioned jackscrews; and repetitive measurement of the screw/nut play of the outboard and center flap jackscrews to detect discrepancies, and corrective action, if necessary. This action would remove Model 900EX and Mystere Falcon 900 series airplanes from the applicability of the AD. For the Model Falcon 2000 series airplanes, this action would also add certain repetitive measurements, delete certain repetitive measurements, and extend the interval for repetitive replacement of certain jackscrews. This proposal is prompted by issuanceof mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions proposed by this AD are intended to prevent jamming of the flap jackscrews during the approach to landing, which could result in inability to move the flaps or an asymmetric flap condition, and consequent reduced controllability of the airplane.