As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REJECTED TAKE OFF AT 90 KTS DUE TO PREDICTIVE WINDSHEAR WARNING. RADAR CONTINUED TO DISPLAY WX OF HIGH INTENSITY EVEN THOUGH WX WAS ACTUALLY NOT PRESENT. 153,0000 T/O WEIGHT. MAINTENANCE REMOVED & REPLACED WXR UNIT IAW AMM 34-43-00. SYSTEM OPS CHECKED GOOD.