What was found
FOS' RADAR DISPLAY DOES NOT DISPLAY CORRECTLY IN AUTO / WXTX OR WX. RADAR PAINTS AS IF IT IS IN MANUAL TILT AT -2 -3 DEGREES DOWN AND APPEARS TO BE GROUND MAPPING. WHEN TAKEN OUT OF AUTO DISPLAYS MATCH ON CA+FO ND. GROUNDED - YES. PERFORMED B737-800 FIM 34-43 TASK 801 WXR BITE SHOWS NO FAULTS. PERFORMED WXR SYSTEM OPS TEST REF B737-800 AMM 34-43-00-710-802-001. ALL TEST PASS NO HISTORY IN TRAX LAST 90 DAYS.