What was found
NO. 1 ENGINE BURNING 200 LB/HR MORE THAN NO. 2 ENGINE. AFTER TURNING OFF CENTER PUMPS NO. 1 FUEL QUANTITY DROPPED QUICKLY TO A 500 LB DIFFERENTIAL. IT FLUCTUATED QUITE A BIT, BUT ENDED UP EQUAL TO NO. 2 FUEL QUANTITY. GROUNDED - YES. FLIGHT CREW OBSERVATION NOTED. REF LOGPAGE #60565040 FOR #1 FQIS DISCREPANCY. MAIN TANK #1 FQIS FAILS SYSTEM TEST REF AMM TASK 28-41-00-730-801. COMP PROBE AND SYSTEM TOTAL CAPACITANCE OUT OF ACCEPTABLE VALUES.