As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL QTY INDICATION STATUS MSG PER CREW. L MAIN TANK QTY INTERMITTENT, CTR READS NORMAL AND RIGHT MAIN TANK WAS BLANK FOR ABOUT 1.5 HOURS AND THEN ALL TANK READINGS RETURNED TO NORMAL. WITH ALL TANK READINGS NORMAL THE TTL QTY IND WAS STILL BLANK. FOUND FAULTY FUEL QUANTITY PROCESSOR UNIT. REPLACED FUEL QUANTITY PROCESSOR UNIT. ALSO REPLACED FOUR FUEL QT PROBES. ALL INDICATIONS NORMAL.