As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 4:30 HRS INTO FLIGHT, CENTER TANK EMPTY. CENTER FUEL QTY GAUGE COUNTED UP TO 5.67 X1000. CONFIG ANNUNCIATOR ILLUMINATED. CENTER TANK VERIFIED EMPTY WITH FUEL PUMPS. QTY COUNTED DOWN TO ZERO. QTY WENT UP AND DOWN TO ZERO MANY TIMES AFTERWARDS. ACFT GROUNDED.