As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED UPPER SURFACE LOCATED RIB 13+16 STR 11 RT WING. PERFORMED PERMANENT REPAIR ON UPPER SURFACE 13 +16 ON STR 11 ON RT WING IAW EA 57-0365-19 CAT B IAW RDAS 80664047/109/2019 EC A19 627-07 REF NR 2019-258096.