As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED, "WX RADAR- DIM IMAGE AND GOING INTO "WAIT" MODE. THIS OCCURED DURING HEAVY RAIN. RADAR TURNED OFF RTB." AVIONCS PERSONNEL WERE ABLE TO REPRODUCE THE FAULT DURING A GROUND TEST. RADAR PEDESTAL AND SURROUNDING AREA IN THE AVIONICS BAY WAS FOUND WET WITH RAIN WATER. THE AREA WAS THOUROUGHLY DRIED AND WX RADAR GROUND TESTED SERVICEABLE.