As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WX RADAR DISPLAYS UNBELIEVABLE STRAIGHT LINE OF WEATHER RETURNS ABOUT 20 DEGREES RIGHT OF NOSE. GROUNDED - YES. PILOT REPORTS WXR WAS REPORTING WEATHER RETURN BUT NO VISABLE WEATHER COULD BE FOUND. PERFORMED WXR OP'S TEST NO FAULTS FOUND. NO MAINT. MESSAGES, NO HISTORY 30 DAYS. SEAMC NOTIFIED, RON.