What was found
(CAN) DURING THE DAILY INSPECTOIN, DAMAGE TO THE M/R BLADE WAS NOTICED. INSPECTION OF THE AIRCRAFT REVEALED THAT THE COVER, EXHAUST DIFFUSER, HELD BY A SPEC. BOLT AND TABWASHER ON THE COVER, TURB., REAR WAS MISSING. THE BOLT & TABWASHER WHERE STILL IN PLACE ON THE REAR TURB. COVER. IT SEEMS THAT THE EXHAUST DIFFUSER COVER HAD DISINTEGRATED AND ONE PIECE, APPROX 1 INCH LONG AND .250 INCH WIDE (APPROX 1.0 GR.) WAS SENT THROUGH THE ROTOR DISC FROM THE TAILROTOR, CAUSING THE MAIN ROTOR BALDE DAMAGE. BLADE CHANGE AND SPEC. INSPECTION AS PER MAINTENANCE MANUAL WILL BE CARRIED OUT.