As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPT FMC FAILED FOR ABOUT 20 SECONDS AND CAME BACK IN CRUISE. CAPT ND VTK. NO FMC ON MCDU'S. FMC P/RST LIGHT. ALL NORMAL BEFORE QRH COULD BE PERFORMED. GROUNDED - YES. LAST LEG L/H FMC FAULTED "INTERMITTENT FMC PRES POS LAT". PERFORMED B737-9 FIM 34-61-00-810-918. OPS NML. ETOPS GND VERIFICATION TEST SUCCESSFUL.