As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-4 CHECK INSPECTION, FOUND CORROSION ON INNER SKIN FROM FS 1140 THROUGH FS 1240 STRINGER 31L TO STRINGER 31R. REMOVED CORROSION AND INSTALLED REPAIR IAW AIA SKETCH AIA/E/2398 REV 0 SHEET 01 THROUGH 08 DATED 11-11-96. CORROSION CARD NR 5590-0551, NON-ROUTINE TASK CARD NR 88386.