What was found
DURING PREFLIGHT GOT "VTK" AND "MAP" FLAGS ON F.O. NAV DISPLAY. GROUNDED - YES. ACCOMPLISHED IFIM TASK 31-00-00-810-803 RESET FMC'S CMPTR C/B NO ACTIVED FAULTS STATUS MESSAGES CLEARED. 'VTK AND MAP' NO SHOWING ON F.O. NAV DISPLAY, NO FAULTS NOTED.