What was found
BGR - FLT 4662 - BOS-YHZ, DURING FLIGHT, THE LEFT MAIN BUSS LIGHT ILLUMINATED IN FLIGHT. THE AIRCRAFT DIVERTED INTO BGR AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE LEFT BUSS RELAY 67PC TO BE AT FAULT. AFTER REPLACING THE RELAY, AND PERFORMING ALL REQUIRED CHECKS. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)