As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALTHOUGH RADAR APPEARED TO OPPERATE NORMALLY IT GENERATED RANDOM SPIKES THAT WERE IDENTICAL ON BOTH DISPLAYS THE RADAR WAS ON FOR MOST OF THE FLT BUT ONLY STARTED SPIKING DURING THE LAST 1.5 HOURS AND ONLY ON RANGES GREATER THEN 40 MILES GROUNDED YES. COULD NOT DUPLICATE. OPS CK NML AND ALL RANGES CK NML, NO HISTORY 60 DAYS.