What was found
(CAN) WHILE COMPLETING AD CF-81-25R5, WING BOLT INSPECTION, THE RIGHT FORWARD LOWER BOLT WAS FOUND TO BE VERY TIGHT. AFTER REMOVAL OF THE BOLT, DISCOVERED THE BOLT AND NUT WERE DAMAGED WHICH MADE THE BOLT VERY DIFFICULT TO REMOVE. UPON FURTHER INVESTIGATION, AGREED THE BOLT AND NUT WERE ASSEMBLED WITH LITTLE PIECES OF DIRT ON THE THREADS. THE BOLT AND NUT WERE REPLACED.