As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN AUTO MODE CAPT AND FIRST OFFICER RADAR DISPLAYS SHOW DIFFERENT RETURNS, CAPTAIN SIDE SEEMS TO HAVE ISSUES WITH EITHER THE GAIN OR TILT. GROUNDED - YES. ACCOMPLISHED WEATHER RADAR SYSTEM BITE PROCEDURE, REF B737-900 FIM 34-43 TASK 801, OPS CHECK GOOD. NO FAULTS NOTED. NO HISTORY LAST 30 DAYS.