As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK INSPECTION, FOUND THE FOLLOWING: AFT CARGO COMPARTMENT SKIN SHOWS CORROSION AT STA 1540 LONG 25R. REMOVED CORROSION IAW SRM 51-1-8. FOUND TO BE OUT OF LIMITS IAW SRM 53-2-0. REMOVED LONGERON SECTION IAW SRM 51-1-20D. CUT NEW LONGERON SECTION AND FABRICATED SPLICES IAW SRM 53-2-2. PRIMED AND INSTALLED PARTS IAW SRM 51-1-8 AND 51-1-20D.