What was found
RT TANK INDICATED 3000 LBS LOW FOR AN EXTENDED PERIOD OF TIME BEFORE RETURNING TO NORMAL. SNAPSHOT OF EVENT SHOWED PROBES 14 & 16 IN RT TANK INDICATING 0 VS LT TANK OF 5.4 & 19.1. AFTER FUEL QUANTITY RETURNED TO NORMAL NR 16 PROBE INDICATED SIMILAR TO RT SIDE. CENTER TANK WAS EMPTY. REPLACED PROBES LT 16 & RT 14 & 16. PERFORMED FUEL QUANTITY INDICATING SYSTEM ADJUSTMENT TEST IAW AMM, TEST PASSED. ADJUSTMENT CHECKED GOOD IAW AMM 28-41-00-710-801.