As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOLLOW-UP TO FOQA DATA SHOWING INTERMITTENT LEFT FUEL TANK QUANTITY 500 LB DROP, REPLACE #1 TANK UNIT COMPENSATOR. GROUNDED - YES. REMOVED AND REPLACED COMP PROBE PER RECREATIONAL TSR. ALL VALUES WITHIN LIMITS REF AMM 28-41-21, 28-11-11. #1 FQIS SYSTEM TEST GOOD AT 399.7/57.83 CAPACITANCE REF AMM 28-41-00-730-801. COMPARISON CHECK GOOD REF AMM 28-41-00-720-801.