As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FMC FAILED FOR APPROXIMATELY ONE MINUTE DURING CRUISE, WITH VTK DISPLAYED ON CAPTAINS ND AND NO FMC INFO ON MCDU'S.CORRECTED ITSELF. GROUNDED - YES. ACCOMPLISHED FMC SYS BITE PROCEDURE WITH NO FAULTS NOTED REF B737-900 FIM 34-61 TASK 801. O HISTORY 30 DAYS. OK FOR SVC.