As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RADAR LATERAL SWEEP IS INCORRECT WHILE OPERATING IN MANUAL TILT, BEAM SWEEP WAS NOTICEABLE TO THE LEFT WHILE VERY LITTLE ENERGY RETURN ON THE RIGHT. RAN TILT AT 10 DEG. NOSE LOW. GROUNDED - YES. PRECAUTIONARY, REMOVED/REPLACED WXR ANT DRIVE UNIT REF AMM 34-43-11. OPS NML.