As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE RECEIVED 'VTK" AND NO FMC DATA ON CA SIDE. AFTER A FEW SECONDS "VTK" EXTINGUISHED AND FMC DATA CAME BACK AND WE RESUMED NORMAL OPERATIONS. GROUNDED - YES. PERFORMED FMC SYSTEM BITE PROCEDURE IAW B737-900 FIM 34-61 TASK 801, NO DEFECTS NOTED CAPTAIN AND FO FMC GOOD.