As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VTK FLAG ON CAPT MAP WENT AWAY AFTER APPROX 1 MINUTE. VTK FLAG ON CAPT SIDE RETURNED AND MAP REMOVED. FOLLOWED QRH AND WENT FMC BOTH ON R AFTER ONE MINUTE FMC INFO ON POS PAGE DISPLAYED NORMAL. PUT FMC SWITCH BACK TO NORMAL. GROUNDED - YES. PERFORMED FIM 34-61 TASK 836. FOUND NO DISCREPANCIES, OPS CHECK NORMAL.