As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, THE BATTERY CHARGER 28 VDC CIRCUIT BREAKER POPPED IN FLIGHT. FOLLOWED COM PROCEDURES, TRIED 1 RESET AND BREAKER POPPED AGAIN. FOUND AFT AIRSTAIR BATTERY PACK FOR POWER SUPPLY TO BE SHORTED INTERNALLY. REMOVED AND REPLACED POWER SUPPLY AND BATTERY PACKS. OPERATIONS CHECK GOOD IAW 335101.