What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS WITH CENTER FUEL TANK EMPTY RIGHT TANK SHOWED INCREASE BURN THAN THE LEFT. THE DIFFERENCE WAS 100 LBS EVERY 10 MIN. FUEL FLOWS WERE THE SAME. AFTER LANDING A 220 LB DIFFERENCE CORRECTED IT SELF TO A 10 LB DIFFERENCE BY THE TIME OF GATE ARRIVAL. MAINTENANCE ACCOMPLISHED OPERATIONAL TEST- FUEL QUANTITY INDICATION SYSTEM. NO FAULTS INDICATED IAW AMM 28-41-00. NO PRIOR HISTORY.