As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE PILOT EXPERIENCED DIFFICULTY TURNING RIGHT TO THE ASSIGNED HEADING, FULL RIGHT RUDDER AND TRIM WAS NEEDED TO MAINTAIN CONTROL. DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE WITHOUT INCIDENT. MAINTENANCE INSPECTED THE ACFT AND FOUND THAT A RUDDER CABLE IN THE REAR OF THE PLANE HAD BROKEN.