As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE RUDDER LOCKED UP ON LANDING, UNABLE TO MOVE IN ANY DIRECTION. THE RUDDER CAME LOOSE AFTER TURNING OFF THE RUNWAY. *S/D* THE SECOND STAGE LOAD FEEL SPRING ON THE UPPER RUDDER MECHANISM BROKE AND OBSTRUCTED FREE MOVEMENT OF THE UPPER MECHANISM, SUBSTANTIALLY INCREASING PEDAL FORCES. REPLACED THE SECOND STAGE SPRING.