As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VTK DISPLAYED ON CAPT SIDE. VTK DISPLAYED AND MAP WENT AWAY ON CAPT ND FOR ABOUT 15 SECONDS THEN ALL DISPLAYS RETURNED TO NORMAL, VTK WENT AWAY. GROUNDED - YES. FOUND "PRES POS LAT RATE" FAULT LOGGED LAST LEG. ACCOMPLISHED FIM 34-61 TASK 824, NO CURRENT IRU FAULTS AND NONE LAST LEG. ACCOMPLISHED FMC BITE REF FIM 34-61 TASK 801. BOTH FMC'S OPS NORMAL. GROUND VERIFICATION ACCOMPLISHED.