As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS WX FAIL AT BOTH CA AND FO DISPLAYS. RADAR WORKS INTERMITTENTLY. FAILURE OCCURS WHEN AIRCRAFT IS IN ANY ANGLE OF BANK/TURN. FLYING IN LEVEL FLIGHT RADAR WILL WORK NORMALLY. MAINTENANCE REMOVED AND REPLACED WX DRIVE UNIT. OPS CHECKED NORMAL IAW AMM 34-43-11.