As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 4075 WAS CLIMBING THROUGH 15,000 FEET AND THE WEATHER RADAR BEGAN TO MALFUNCTION. THE CREW CONTACTED DISPATCH AND WAS ADVISED TO RETURN TO PIT. MAINTENANCE INSPECTED AND REPLACED THE WEATHER RADAR IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 30-00-00. OPERATIONAL TESTS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.