As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THAT IN FLIGHT WHEN THE AIRCRAFT WAS COLD SOAKED THE RIGHT TAIL DEICE FAILED. THE MAINTENANCE VENDOR DETERMINED THAT THE RIGHT TAIL DEICE BOOT HAD FAILED. THE DEFECTIVE BOOT WAS REMOVED AND A NEW BOOT WAS INSTALLED. OPERATIONAL CHECKS WERE SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.