What was found
MOMENTARY ILLUMINATION OF VTK ON FO'S NAV DISPLAY, OCCURRED TWICE, EACH LASTING (2) SECONDS. GROUNDED - YES. NO ACTIVE MSG ON OMF; OMF SHOWS MSG 31-00242 AND 31-00372, WHICH ARE NOT ACTIVE PER B737-9 IFIM TASK 31-65-00-810-860 THE FAULT WAS INTERMITTENT. PERFORMED BITE ON FMC CDU FOR FMC FOUND INFLIGHT FAULT ON LEG 8 R FMC HAS NO INPUT. PERFORMED GOOD OPS TEST FOR FMC. REF B737-9 AMM 34-61-00-710-801.