As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PIT BILGE SKIN CORRODED OB SIDE OF STR 28L, STA 1045-1048, LBL 16-17. REMOVED CORROSION, FOUND TO BE OUT OF LIMITS. CUT OUT DAMAGED AREA OF SKIN. FABRICATED REPAIR DOUBLER AND FILLER. TREATED AND FR PRIMED. INSTALLED EXTERNAL REPAIR REF SRM 53-30-3 FIG 3. THIS IS CLASSIFIED AS A MAJOR REPAIR.