What was found
ETOPS SIGNIFICANT SYSTEM, TOTAL FUEL DIFFERS FORM CAPT AND F/O FMC(S) CALCULATED FUEL QTY. FUEL QTY ERROR PAGE 2/2 ALERT MSG DISPLAYED. FUEL FLOW WAS NORMAL TOTAL FUEL 24.8 FMC CALCULATED FUEL 22.3. NO EVIDENCE OF FUEL LEAK. PERFORMED T/S PER FIM 34-61-00 FIG 106 AND 106A STATUS PAGE SHOWS NO SENSOR FAULT, BITE FQP NO FAULT FUEL QTY SHOWS SAME AS FMC FUEL. NO DISCREPANCY SYS OK FOR SERVICE PER AMM AND FIM 34-61-00.