What was found
FUEL IMBALANCE 1600 LBS, 4 HOUR FLT. PROGRESS PG SHOWS RT SIDE BURNED 200 LBS MORE THAN LEFT. AT ARRIVAL NOTED DRIPSTICK READINGS AND QTY SHOWS LEFT WING = 20.8 INCH AT 4420 LBS. RIGHT WING =16.0 INCH AT 2509 LBS. FUEL QTY ACCURATE. FUEL CONFIG LEFT ILLUMINATED AT TOUCHDOWN. FUEL IMBALANCE 1300 LBS AFTER 6 HRS FLT. PRESSURIZED SYSTEM AND FOUND NO INTERNAL LEAKS. SUSPECT BOOST PUMP NOT GENERATING ENOUGH PRESSURE. OPENED UP TANK TO REPLACE BOOST PUMP.