What was found
F/O'S MCDU FAILED-SCREEN BLANK, PERFORMED AN AIR TURN BACK. R & R MCDU IAW AMM 31-65-01-000-802. OPS TEST IAW AMM 31-65-741-801. OPS TESTED NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
F/O'S MCDU FAILED-SCREEN BLANK, PERFORMED AN AIR TURN BACK. R & R MCDU IAW AMM 31-65-01-000-802. OPS TEST IAW AMM 31-65-741-801. OPS TESTED NORMAL.