As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FMC FAILED FOR ABOUT FOUR MINUTES DURING CRUISE, VTK AND MAP FLAG ON CAPTAIN`S INBD DU ALONG WITH LOSS OF FMC PROMPT ON CPTS CDU NO FURTHER MALFUNCTIONS REST OF FLIGHT. ACFT GROUNDED. NO CURRENT FAULTS ON INITAL EVALUATION FMC BITE OK IAW FIM 34-61, TASK 801.