Airworthiness Directives; Dassault Aviation Airplanes

We propose to adopt a new airworthiness directive (AD) for all Dassault Aviation Model FAN JET FALCON airplanes; Model FAN JET FALCON SERIES C, D, E, F, and G airplanes; Model MYSTERE-FALCON 200 airplanes; Model MYSTERE-FALCON 20-C5, 20-D5, 20-E5, and 20-F5 airplanes; and MYSTERE-FALCON 50 airplanes. This proposed AD was prompted by a report that, during approach for landing, the main entry door detached from an airplane. This proposed AD would require a one-time functional test or check of the main entry door closure and warning system, and applicable door closing inspections, adjustments, and operational tests, and corrective actions if necessary. We are proposing this AD to detect and correct defective crew/passenger doors. Such a condition could result in the in-flight opening or detachment of the crew/passenger door, which could result in loss of control of the airplane and injury to persons on the ground.