As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: REPORT OF HEAVY AILERONS DURING APPROACH AND LANDING AT FLAP SETTINGS 2-5 IN EITHER DIRECTION. BECOMES MUCH HEAVIER AFTER THAT. REMOVED AND REPLACED AILERON CENTERING MECHANISM -CAM FOLLOWER BEARING IAW AMM 27-92-02.