What was found
CENTER NR 2 TANK INDICATED 4600 WITH LT MAIN TANK NR 1 INDICATING 1200. ALL ENGINE FUEL FLOW INDICATIONS MATCHED WITH 5900 /- MANUAL FUEL READINGS SHOWED 2500 ABOVE SCHEDULED FUEL TANK INDICATION. DECREASED TO EMERGENCY FUEL LEVEL NO OTHER ALERTS OR FAULTS NOTED UNTIL NR 2 TANK WENT BELOW, TANK 2 FUEL QTY LO ALERT ILLUMINATED, PERFORMED FUEL QTY INDO SYS TEST IAW 28-41-00-700-801. ALL TESTS PASS PERFORMED STICK READINGS ON TANKS 1, 2, 3, READINGS CORRESPOND TO INDICATIONS IN ALL TANKS THIS CLEARS DEFRRAL M516424, NR 3 MN TANK FUEL QTY IND DMP 28-01-1-2, REVERSED.