As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ANNUAL INSPECTION IT WAS DISCOVERED THAT A NUMBER OF INDUSTRIAL GRADE POP RIVETS WERE USED IN THE COURSE OF AIRFRAME REPAIR INSTEAD OF AIRCRAFT GRADE RIVETS. INDUSTRIAL GRADE RIVETS WERE REMOVED AND REPLACED WITH PROPER AIRCRAFT QUALITY RIVETS.