What was found
LANDING GEAR CONTROL C/B (F7) WAS FOUND POPPED AFTER GEAR WAS SELECTED DOWN. CB WAS RESET AND GEAR CYCLED NORMALLY. CB WAS DISCOVERED OPEN AFTER MANUAL HIT C/B PANEL. INSPECTED MAIN LANDING GEARS LT AND RT FOR ANY LEAKS, WIRE HARNESS, SWITCH UPLOCK. ALSO INSPECTED NOSE LANDING HARNESS AND SWITCH FOR ANY DEFECTS. VERIFIED THREE GREEN LIGHTS INDICATION IN COCKPIT, AND INSPECTED C/B F7 NO FAULTS FOUND.