As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ONE HOUR AFTER TAKE OFF, NOTICED LT OUTER FUEL QTY HAD DECREASED 900 LBS. FOLLOWED QRH PROCEDURES. SUSPECTED FUEL LEAK. TURNED OFF FUEL BOOST PUMPS, TANK WOULD CONTINUE TO DECREASE ANOTHER 350 LBS. DIVERTED AND LANDED. SWAPPED LEFT OTBD FUEL REFUEL VALVE IAW MM 28-25-12-04 & GMM 03-32-01 WITH CENTER TANK VALVE FOR TROUBLE SHOOTING PURPOSES. VALVE IN LT OTBD TANK OPS CHECKED NORMAL IAW MM 28-25-12-04.