As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE SKIN INTERNAL BEAR STRAP HAS 3 EA SMALL AREAS OF CORROSION AFT OF AFT PIT CARGO THRESHOLD BS 855-865 & AT FWD SIDE OF THRESHOLD BETWEEN BS 794-807 JUST BELOW STR 25R LAP JOINT. MAJOR REPAIR ACP'D, THE AFT AREAS WERE BLENDED THE FWD AREA REPAIRED WITH EXTERNAL FUSELAGE DOUBLER. SUSPECT MOISTURE CONTAMINATION.