What was found
CAPTAIN`S SIDE RADAR DISPLAYS TWO TARGETS AT 10:00 O'CLOCK AND 2:00 O'CLOCK. GREEN PERIMETERS, YELLOW INTERRIDES AT ALL DISTANCE, NO ACTUAL CB OR WEATHER IS PRESENT. F/O'S SIDE DOES NOT DISPLAY THE NONEXISTENT TARGETS. MAINTENANCE & DISPATCH NOTIFIED VIA ACARS AT 13:10Z. ACFT GROUNDED. VERIFIED WRITE UP. NO FAULT DURING WEATHER RADAR BITE TEST OR DEU BITE. DURING DEU NR 1 SELF TEST, SOFTWARE RESET SELF INITIATED. AFTER DEU SELF TEST COMPLETED DISPLAY OPS NORMAL REF FIM 34-43, TASK 801. DEU TEST NORMAL REF 31-62-21.