As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, CREW RECEIVED A WEATHER RADAR FAIL MESSAGE. RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND RADAR UNIT DEFECTIVE. REPLACED UNIT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 34-41-00. OPERATIONAL CHECK GOOD AND AIRCRAFT APPROVED FOR RETURN TO SERVICE.