What was found
NR 3 FUEL QTY INDICATOR FAILED INFLIGHT. RETURN TO HKG. DUMPED 50000 LBS OF FUEL, INDICATOR RETURN TO NORMAL. MEL 28-01-01-02: TANK NR 3 FUEL TANK SYNOPTIC QTY DISPLAY INOP. FUEL TO KNOWN QTY, AND AFTER REFUELING, VERIFY TANK NR 3 QTY WITH FUEL LEVEL STICKS AND RECORD IN THE AML/EAML. OPERATE FSC IN MANUAL. OPS NOT AUTHORIZED ABOVE 78 N LAT. TAIL FUEL MGMT, INOP.