As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE SEAL RETAINER SCREWS ON THE WING TRAILING EDGE PANELS, BY THE AILERONS, HAVE BEEN FOUND TO BE OVERSIZED, NAS1581C3T3P OR LONGER. THE RESULT IS THE AILERONS ARE GETTING GOUGED BY THE LONGER SCREWS DURING CYCLING. ++X++ (TC# 20190617001)