As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RUDDER TRIM FROZE DURING INITIAL CLIMB OUT. AT LOWER ALTITUDES RUDDER TRIM FUNCTIONED NORMAL. MAINTENANCE PERFORMED THE REQUIREMENTS OF NTO 940-2017-00253 & 940-2017-00250. A SUCCESSFUL OPERATIONAL CHECK FLIGHT WAS PERFORMED. AIRCRAFT WAS RETURNED TO SERVICE.