What was found
AT ALTITUDE COULD NOT GET FUEL OUT OF TANK NR 1, IMBALANCE AT 5000 LBS BETWEEN TANKS 1 AND 3. WITH TANK PUMPS FOR ENGINE NR 3 UNLATCHED FUEL QUANTITY CONTINUED TO DECREASE, INDICATORS TESTED 4.0. BOTH RCCBS FOR TANK 3 BOOST PUMPS WOULD NOT SHUT OFF EITHER WITH SWITCHLIGHT ACTUATION OR BY PULLING COCKPIT CIRCUIT BREAKERS. REPLACED TANK 3 INBD AND OTBD BOOST PUMP RCCBS. RAN ENGINES VERIFIED NR 1 TANK WAS ABLE TO FEED ALL ENGINES BOTH BOOST PUMPS OPERATED NORMAL.