As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING POST FLIGHT CHECKS IT WAS DISCOVERED A TAIL DE-ICE FAULT CODES RATC 18 AND LATC 18. THE MAINTENANCE TEAM DETERMINED THE LEFT HORIZONTAL LEADING EDGE DEICE ACTUATOR WAS DEFECTIVE. THE ACTUATOR WAS REMOVED, AND A SERVICEABLE UNIT WAS INSTALLED. OPS CHECKS WERE SATISFACTORY, AND THE AIRCRAFT WAS RETURNED TO SERVICE.