As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SAL - MAJOR REPAIR - DURING C4 CHECK DISCOVERED CORROSION ON FLOOR SUPPORT, LOWER FLANGE, LOCATED BETWEEN FS 16-1" AND FS 16+5" AT Y-254. CORROSION WAS FOUND TO BE OUT OF LIMITS IAW AIRBUS SRM. MAINTENANCE REMOVED AND INSTALLED NEW FLOOR SUPPORT FROM FS 12 TO FS 24 AT Y-254 IAW AIRBUS 320 SRM 51-72-11 AND DRAWING D53110900.