As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O, TOWER AND ANOTHER A/C REPORTED A SIGNIFICANT AMOUNT OF FLUID LEAKING FROM LFT WING. FUEL WAS DUMPED DOWN TO LANDING WT AND RETURNED TO SERVICE. INSPECTED FUEL LINES AND TANK PANELS, NO LEAKS NOTED. INSPECTED FUEL TANK VENT SYS PER M/M 28-13-00. A/C WAS FUELED IN AM, BELIEVE HEAT OF SUN EXPANDED FUEL INTO VENT SYSTEM.