As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 37,000 "VTK" ON F/O NAV DISPLAY FOR APROX 10 SECONDS WITH L NAV/V NAV DISCONNECT. SITUATION SELF-CORRECTED, COULD RUN ABNORMAL CHECKLIST. ALL SYSTEMS NORMAL. ACFT GROUNDED. PERFORMED FIM TASK 34-61-801 FMC BITE NO FAULTS NOTED OK FOR SERVICE.