As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MZJ - DURING MAINTENANCE AT EVERGREEN AIR CENTER, NUMEROUS LOCATIONS IN THE OVERWING FRAMES WERE FOUND TO HAVE DRILL BIT DAMAGE, PRIMARILY TO THE INBOARD CHORDS. LOCATIONS ARE LEFT AND RIGHT STATIONS 598-737. DAMAGE WAS REPAIRED PER EVERGREEN INTERNATIONAL AIRLINES ENGINEERING CHANGE. REPAIR AUTHORIZATION NR ECRA 932-53-028-2. (M)