As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERCOSTAL FWD SIDE OF FS 349 AT STR21L. (C-CHECK) RO 5/16/2020 REMOVED AND REPLACED CORRODED INTERCOSTAL AT F.S.333 TO FS.349 STRINGER 21 WITH NEWLY FABRICATED INTERCOSTAL IAW CRJ200 SRM. REFERENCE CAMP# 20804291 FOR FABRICATION OF INTERCOSTAL.