Airworthiness Directive · Amendment 39-12264 · Dassault Model Mystere-Falcon 900 and Falcon 900EX Series Airplanes
Dassault Model Mystere-Falcon 900 and Falcon 900EX Series Airplanes
Model Mystere-Falcon 900 series airplanes having serial numbers 1 through 177 inclusive; and Model Falcon 900EX series airplanes having serial numbers 1 through 41 inclusive; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Dassault Model Mystere-Falcon 900 and Falcon 900EX series airplanes, that requires replacement of the protective screens of the underfloor structure boxes at frame 25. This amendment is necessary to prevent water from collecting and freezing in the structure boxes at frame 25, which could result in jamming of the flight controls and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
