As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RADAR: EXCESSIVE DOWN TILT IS REQUIRED TO PAINT ANY GROUND RETURNS. APPEARS ANTENNA IS MISALIGNED BY APPROX 4 DEG, L/E WHEN 0 DG IS SET IN MANUAL MODE, ANTENNA IS APPROXIMATELY +4 DEG. THIS WAS CONSISTENT IN AUTO MODE AS WELL, WITH THE GC BUTTON DEPRESSED. ACFT GROUNDED. WHILE ACCOMP, WXR OPS TEST VERIFIED FAULT. RERACKED WXR R/T. REACCOMP. WXR OPS TEST, TEST NOW PASSES REF MM 34-43-00-710-802-001 & 34-43-41-400-801.