What was found
FUEL LEAKING FROM RT WING SURGE TANK VENT. SUSPECT UNWANTED FUEL TRANSFER FROM NR 2 MAIN TO NR 3 MAIN. AIRCRAFT WAS FUEL TO NR 2 MAIN LEVEL OF 84800 LBS AND NR 3 MAIN TO A LEVEL OF 84700 LBS WITHIN OVER AN HOUR, THE LEVEL IN NR 2 MAIN HAD DECREASED TO 81900 LBS AND NR 3 MAIN HAD INCREASED TO 86500 LBS. FOUND NR 3 MAIN TANK FLOAT SCAVENGE VALVE STUCK OPEN. REPLACED SCAVANGE SYS FLOAT VALVE. ACCOMPLISHED IDT OF NR 3 SCAVENGE SYSTEM FLOAT VALVE. ACCOMPLISHED FUEL SCAVENGE SYSTEM TEST, PASS TEST.