As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE EN ROUTE, THE CREW EXPERIENCED AN AIRFOIL DE-ICE FAIL ON THE TAIL IN FAST AND SLOW MODES. MAINTENANCE ADVISED THE CREW TO RETURN TO PIT DUE TO ICING CONDITIONS REPORTED EN ROUTE TO EVANSVILLE. MAINTENANCE INSPECTED AND REPLACED THE EJECTOR FLOW CONTROL IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-13-06. OPERTIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.