What was found
3HRS IN FLT, FUEL DROPPED 13600LBS. FUEL DISAGREE EICAS. RAN FUEL DISAGREE AND FUEL LEAK CHECKLIST. TALKED TO ATL MX CYCLED FUEL JETISON VALVES FUEL LOSS STABILIZED. 45 MIN LEG FUEL LOST ANOTHER 8000LBS. DIVERTED, PERFORMED FUEL JETTISON SYS OPN TEST 28-31-00-720. NTF. FDR DATA SHOWS CTR TANK HAD LARGE FUEL QTY FLUXUATIONS 613572 FWD FLT DECK CENTER FUEL QTY INDICATIONS TO MCO PER 28-41-01. W STICK TANKS AFTER FUELING. ETOPS CATEGORY 'B': DIVERSION OR TURNBACK