Airworthiness Directives; Dassault Model Mystere-Falcon 900 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Dassault Model Mystere-Falcon 900 series airplanes, that requires revising the Abnormal Procedures section of the airplane flight manual to advise the flightcrew to avoid use of certain display modes during approaches. This AD also requires replacing certain symbol generators of the Electronic Flight Information System (EFIS) with modified symbol generators. This action is necessary to prevent distraction of the flightcrew during a critical phase of flight due to certain EFIS displays flashing or going blank, which could result in loss of control of the airplane. This action is intended to address the identified unsafe condition.