As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ENROUTE TO EVV, THE CREW RECEIVED A CAPTAIN'S WINDSHIELD HEAT FAIL CAS MESSAGE AND RETURNED TO PIT. MAINTENANCE INSPECTED AND CLEANED THE WINDSHIELD SCREWS AND RESEALED THE WINDSHIELD IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.