As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION UPPER SURFACE LOCATED POINT N1 RIB 4 +9 POINT 2 RIB 4 +15 STR 11 RT WING. PERFORMED PERMANENT REPAIR ON LOC UPPER SURFACE POINT 1 RIB 4 +9 POINT 2 RIB 4 +15 STR 11 ON RT WING IAW EA 57-0365-19 CAT B IAW RDAS 80664047/109/2019 EC A19 627-07 REF NR 2019-258088.