Dassault SUBJECT: EFIS Displays SUMMARY: 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.