What was found
DURING FLIGHT CREW GOT FUEL IMBALANCE 1 - 4 EICAS MSG, NOTICED NR 3 FUEL TANK QTY IS DECREASING, WHEN STAB TANK PUMPS ARE ON WITH STAB TANK PUMPS OFF, NR 4 TANK QTY STABILIZED. READING, NR 1 30.8, 2 84.9, 3 85.1 & 4 22.9. CROSS FEED VLV OPENED. LOST AROUND 7000 LBS BASED ON INDICATIONS. FUEL FLOW WERE EVEN DURING TROUBLESHOOTING. FOUND RT REFUEL & DEFUEL & TRANSFER VLVS MANUALLY OPENED AT RT FUELING PANEL. PRESSURIZED ALL MANIFOLDS WITH TRUCK & ACFT FUEL PUMPS. REF AMM28-21-00-501 OPERATIONS CHECKED GOOD. ACCOMPLISHED FUEL FREEZE TEST IAW ECRA 2810-01311 S1=46.7C S2=-46.8C S3=-46.7C.