As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER 1-2 INOPERATIVE ON SHORT FINAL INTERMITTENT. DAU WAS REPLACED AND SUSPECTED TO BE CAUSE OF MULTIPLE SYSTEM MALFUNCTIONS. AFTER TAKE OFF THE DAU 2A FAIL MESSAGE DISPLAYED AND THE RUDDER SYS 1-2 INOPERATIVE MESSAGE REAPPEARED AFTER EMERGENCY WAS DECLARED. REPLACEMENT OF RUDDER SYS 2 SWITCH PRESSURE SWITCH. BOTH RUDDER AND AILERON SHUTOFF SWITCHES WERE FOUND ENGAGED AFTER LANDING. VERIFY SYSTEM 1 GOES TO STANDBY AND RUDDER OVERBOOST IS DISPLAYED ABOVE 135 KNTS.