As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK INSPECTION IN THE LEFT BUTT STRAP WAS FOUND TO BE CORRODED BETWEEN FRAMES 13 AND 15. ANOTHER LEFT BUTT STRAP WAS CORRODED BETWEEN FRAMES 14 AND 21. MAINTENANCE REMOVED AND REPLACED THE CORRODED SECTIONS OF BUTT STRAP IAW SRM 51-25-00, 51-21-02, AND 51-40-02 E25. (M)