What was found
(CAN) DURING A 100 HOUR INSPECTION ROTATIONAL PLAY WAS NOTED IN THE ROTATING SWASHPLATE. THE DRIVE LINK WAS DISASSEMBLED IAW THE 100 HOUR INSPECTION AND SB 05-009. THE BOLT IN ATTACHING THE DRIVE LINK TO THE MAST WAS FOUND SEIZED IN THE ASSEMBLY. IN ADDITION TO BEING SEIZED THE BOLT WAS ALSO SHEARED. ONCE THE BUSHINGS BECAME SEIZED THE BOLT WAS EXPOSED TO A SHEARED LOAD AND BROKE UNDER THE STRAIN. IF THIS HAD OCCURRED ON THE OTHER SIDE OF THE ASSEMBLY THE DRIVE LINK WOULD HAVE BEEN LOST, RESULTING IN THE LOSS OF CONTROL OF THE HELICOPTER. THE ASSEMBLY HAD BEEN IN SERVICE FOR 113 HOURS SINCE NEW. THE ASSEMBLY HAD BEEN INSTALLED WITH THE WRONG BUSHINGS P/N 7050A3623027 WHICH WERE PROVIDED BY THE MANUFACTURE, IN PLACE ON THE REQUIRED MM2599973. (TC# 20090623007)