As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN FLIGHT, CREW NOTICED A BURNING SMELL IN THE CABIN, SIMILAR TO AN ELECTRICAL SHORTAGE. IT HAPPENED TWICE DURING FLIGHT. THE SMELL CAME AND LEFT. UPON LANDING, THE PILOT NOTICED THE AM/EX CIRCUIT BREAKER POPPED. THERE WAS NO IMMEDIATE EVIDENCE OF ANY BURN DAMAGE OR SHORTAGE.