Airworthiness Directives; Dassault Model Mystere-Falcon 50, Mystere-Falcon 900, and Falcon 900 EX Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Dassault Model Mystere-Falcon 50, Mystere-Falcon 900, and Falcon 900 EX series airplanes, that requires installing a shield plate over the tank structure above the Stormscope antenna and replacing the Stormscope antenna plug connector with a new connector. This action is necessary to prevent puncture of the fuel tank in the event of a belly landing, which could result in a post-landing fire if fuel leaking from the tank makes contact with the sparks from the airplane sliding on the ground. This action is intended to address the identified unsafe condition.