As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO AREA INTERNAL FUSELAGE BELOW FLOOR LEVEL AT FS 1015.0 IN BETWEEN STR 26L AND STR 26R THERE IS CORROSION ON FWD FRAME FLANGE. (C-CHECK) RO 4/23/2020 REPAIRED FRAME AT FS 1015.0 IN BETWEEN STR 26L AND STR 26R REF REO AND SRM. PRESSURE CHECKS GOOD. SEE CONTINUATION CARDS FOR DETAILS.