As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, THE CREW SMELLED A BURNING / ELECTRICAL SMELL, FOLLOWED SHORTLY BY THE LOSS OF A ''FEW'' ELECTRICAL SYSTEMS. MAINTENANCE PERSONNEL FOUND THE RIGHT BUS TIE SWITCH BURNED AND MELTED. THE CAUSE OF THE SWITCH OVERHEAT CONDITION WAS LOOSE TERMINAL NUTS ON THE SWITCH. THE AIRCRAFT HAD 323 HOURS SINCE NEW.