What was found
PILOT AND CREW DETECTED FAINT BURNING PLASTIC SMELL IN CABIN EN ROUTE TO HOSPITAL FOR PATIENT TRANSFER. PILOT PERFORMED AN UNSCHEDULED LANDING AND CONTACTED MAINTENANCE. IT WAS DETERMINED BY THE MECHANIC ON SITE THAT THE AIR COMM AIR CONDITIONER AFT EVAPORATOR BLOWER MOTOR HAD LOCKED UP CAUSING THE BURNT SMELL, THIS ODOR WAS CIRCULATED THROUGH THE CABIN VIA THE STILL FUNCTIONING FORWARD BLOWER. MOTOR HAS BEEN REPLACED AND ISSUE IS RESOLVED.