Airworthiness Directives; Raytheon Aircraft Company Model 1900D Airplanes

This amendment adopts a new airworthiness directive (AD) that applies to certain Raytheon Aircraft Company (Raytheon) Model 1900D airplanes. This action requires modifying the airplane by incorporating Raytheon Kit No. 129-5200-1, ``Ground Fine Switch Installation Kit''. This action is the result of design analysis during certification of 5.5 degree approach landings of the Model 1900D airplanes. The actions specified by this AD are intended to prevent a loose or misrigged ground fine switch, which could result in very hard landings causing structural damage to the airplane and possible passenger injury.