What was found
SCRATCH PAD SINGLE FMC, OPS MESSAGE APPEAR IN BOTH CDUS FOLLOWED BY F/OS DU DISPLAYING MAP (AMBER) NO VTK DISPLAYED SHORTLY AFTER CRUISE. MODE ANNUNCIATOR IN CENTER DU DISPLAY WHITE BOX AT/LIM FOLLED BY BLANKING 05 THEN RESTORING NORMAL. CAPTAINS AMBER LDG/LT INTERMITTENTLY ANNUNCIATED AS WELL. DUAL FMC OPS MESSAGE NEVER APPEARED. ACFT GROUNDED. PERFORMED FIM TASK 34-61 TASK 836. RESTORED FMC OPERATION IAW INITIAL EVALUATION. RT FMC RESTORED. DETERMINED FAULT WAS INTERMITTENT. PERFORMED FMC BITE NO CURRENT FAULTS NOTED, ACFT OK FOR SERVICE.