As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW INFLIGHT T873/08SEP - TOWER REPORTED FLUID LEAK FROM LEFT WING AT TAKEOFF. RETURNED TO DTW AND LANDED WITHOUT INCIDENT. FOUND FUEL LEAK FROM LEFT WING TIP DUE TO FUEL SCAVENGE SYSTEM INOPERATIVE WITH VALVE OPEN. REPLACED FLOAT OPERATED SHUTOFF VALVE. SYSTEM GROUND CHECKED NORMAL OPERATION.