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 ON UPPER SURFACE LOCATED POINT N1 RIB 16 +6 POINT 2 2 RIB 16+10 POINT 3 RIB 16+15.5 STR 11 RT WING. PERFORMED PERMANENT REPAIR ON UPPER SURFACES POINTS LOC P1 RIB 16+6 P2 RIB 16 +10 P3 RIB 16+15.5 STR 11 ON RT WING IAW EA 57-0365-19 CAT B IAW RDAS 80664047/109/2019 EC A19 627-07 REF NR 2019-258094.