As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FO'S MCDU FLASHES ON AND OFF WITH AN INTERMITTENT " FAIL " LIGHT. ACFT GROUNDED. CONFIRMED DEFECT - RT MCDU HAS CONTINUOUS FAIL/REBOOT CYCLE. R & R AND TESTED RT MCDU IAW MM 34-61-01-000-802/ MM 34-61-01-400-802. OPS NORMAL. VERIFIED MCDU OPS SOFTWARE 3463-SMI-001-02 INSTALLED.