What was found
ETOPS SIGNIFICANT SYSTEM - RT FUEL QTY DECREASED 2000 LBS IN TWO HRS W/FUEL IN C.TANK & C.PUMPS ON. AFTER BALANCING MAIN TANKS, R FUEL QTY DECREASED 1200 LBS IN 1HR 40 MINS W/FUEL IN C TANK AND C PUMPS ON AFTER C TANK EMPTY R MAIN TANK XFER 1000 LBS FUEL INTO C TANK IN 1HR 30 MIN EICAS FUEL CONFIG WARN DISPLAYED IND FUEL IMBALANCE. PERFORMED FIM 28-26-00/101 FIG 104, NO FAULTS NOTED RAN RIGHT FWD AND AFT FUEL PUMPS. FOR 1/2 HR. NO TRANSFERRED OF FUEL TO CENTER TANK. OK LOSS OF FUEL QTY. OK FOR SERVICE.