As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE EXTERIOR SKIN COMMON TO ADF ANTENNA FOOTPRINT IS CORRODED. C-CHECK RO 9/21/2020. REMOVED CORROSION ON FUSELAGE EXTERIOR SKIN COMMON TO LOWER ADF ANTENNA, REF CRJ700 SRM, WITHIN LIMITS. COMPLIED WITH MHIRJ REO, SEE CONTINUATION FOR DETAILS.