What was found
N/A ATB - FUEL IMBALANCE BETWEEN TANK NR 1 AND NR 3 STARTED AT NR 1, 11.9, NR 3, 11.2 AFTER TA/O TANK NR 1, 11.5, TANK NR 3, 9.5 DEFERRED NR 3 COCKPIT GAUGE NR M337674 ISSUED. DEFERRED NR 3 COCKPIT GAUGE IAW MEL 28-11-1-1. VERIFIED FUELING STATION GAUGES ARE OPERATIVE AND ACCURATE. NR 3 TANK FUEL QTY IS TO BE DETERMINED BY FUELING STATION GAUGE OR DEFUELED AND FUELED TO KNOWN QTY.