What was found
FMC FUNCTIONALITY IS VERY SLOW APPROX. 5 TIMES SLOWER THEN USUAL FUNCTIONALITY. THIS INCLUDES COMPUTING LATERAL AND VERITCAL NAVIGAITON AS WELL AS FUNCTIONS SUCH AS OBTAINING WX, FORWARDING OPERATIONAL REQUEST, LOADING OPERATIONAL DATA ETC. GROUNDED - YES. ACCOMPLISHED FMC BITE REF B737-800 FIM 34-61 TASK 801 NO INFLT FAULTS FOUND. VERIFIED ALL FMC SOFTWARE FOR BOTH FMC MATCHED. NO HISTORY PAST 90 DAYS, FMC OPERATIONAL TEST PASS REF B737-800 AMM 34-61-00-710-804.