As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONT INTERMITTENT DISPLAY OF VTK, LOSS OF NAV DISPLAY ATAT ON CAPT SIDE, NO AFFECT ON FO SIDE. GROUNDED - YES. PGM FAULT ON LEFT FMC FOR PREVIOUS FLT. ACCOMPLISHED B737-900 FIM 34-61 TASK 807 OPS NORMAL NO OTHER OCCURRENCE IN FMC AND NO HISTORY PAST 30 DAYS.