What was found
F/O'S MCDU LINE SELECT BUTTON 5L REQUIRES ABNORMALLY FIRM PRESS TO SELECT THE LINE INTO THE SCRATCHPAD. ACFT GROUNDED. REPLACED MCDU. SYS TESTS GOOD REF TASK 34-61-01-400-802.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
F/O'S MCDU LINE SELECT BUTTON 5L REQUIRES ABNORMALLY FIRM PRESS TO SELECT THE LINE INTO THE SCRATCHPAD. ACFT GROUNDED. REPLACED MCDU. SYS TESTS GOOD REF TASK 34-61-01-400-802.