Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Dassault Model Mystere-Falcon 900 series airplanes. This proposal would require revising the Abnormal Procedures section of the airplane flight manual to advise the flightcrew to avoid use of certain display modes during approaches. This proposal also would require 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.