As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL AT STGR 20R BETWEEN FS 319.70 AND FS 333.00 CORRODED. C-CHECK RO 9/27/2020. BLENDED OUT CORROSION ON INTERCOSTAL ON OUTBOARD SIDE AROUND ALL OWER FASTENERS HOLES, REF CRJ-700 SRM. COMPLIED WITH REPAIR, REF MHIRJ REO. SEE CONTINUATION CARD FOR DETAILS.