As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH FMCS FAILED SIMULTANEOUSLY FOR ABOUT 1 MINUTE AND THEN RESUMED NORMAL FUNCTION. DURING THE FAILURE MENU PAGE DISPLAYED AND NEITHER FMC FUNCTIONED. PERFORMED FIM FIM 34-61-00 AND AMM 34-61-00, OPS CHECKED NORMAL. COULD NOT DUPLICATE.