What was found
FUEL IMBALANCE AIRBORNE, ACCOMPLISHED QRH 12.10 FOLLOWED BY 12.2 DISCOVERED CROSSFEED VALVE CIRCUIT BREAKER POPPED. UNABLE TO BALANCE FUEL AND LANDING WITH LESS THAN 1000 USABLE POUNDS WITH 7000 SPLIT, USED CAPTAIN'S AUTHORITY TO RESET THE CIRCUIT BREAKER AIRBORNE AFTER IT RESET, CROSSFEED VALVE WORKED NORMALLY FOR REMAINDER OF FLIGHT. ACFT GROUNDED. INSPECTED CIRCUIT BREAKER PANEL, CREW HAD RESET CIRCUIT BREAKER, INSPECTED THE CIRCUIT BREAKER IAW AMM 20-60-01. NO DEFECTS NOTED AT THIS TIME. AS PRECAUTION, REPLACED CROSSFEED VALVE ACTUATOR IAW AMM 28-22-21. PERFORMED GROUND VERIFICATION OF CROSSFEED VALVE IAW AMM 28-22-21, GROUND VERIFICATION SUCCESSFUL.