As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL PHASES OF LEFT AC BUS CIRCUIT BREAKERS POPPED IN FLIGHT. FLIGHT WAS DIVERTED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LEFT AC C PHASE CIRCUIT BREAKER DAMAGED. REPLACED CIRCUIT BREAKER AND RESET ALL TRIPPED CIRCUIT BREAKERS ON AFT PANEL, OPERATIONAL CHECK NORMAL.