As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, THE RADAR WAS SPOKING AND WOULD NOT PAINT KNOWN BAD WEATHER. THE AC RETURNED TO DEPARTURE WHERE IT LANDED WITHOUT INCIDENT. POST FLIGHT INSP REVEALED THE RADAR ANTENNA AT FAULT. REMOVED AND REPLACED RADAR ANTENNA, PERFORMED OPS CHECKS GOOD. NO OTHER DEFECTS WERE NOTED. AC WAS RETURNED TO SERVICE. (K)