As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 FUEL TANK QTY AND FUEL TOTALIZER WENT BLANK ON UPPER DU FOR APPROX 1 MINUTE THEN RETURNED TO NORMAL. REPLACED NR 2 TANK COMPENSATOR UNIT REF MM 28-41-21-400-801, STEPS 2.C.(1) THRU 3.E.(1), (2), (4)-(8). TANK COMPENSATOR UNIT. T/C 7852800 FUEL TANK ENTRY PERMIT COMPLETED. COMPLETED INSTALLATION OF COMP PROBE NR 2 TANK REF MM 28-41-21-400-801 (10)-(13). OPS NORMAL. LEAK CHECKED GOOD.