As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR MID DD3 INTERCOSTAL HAS CORROSION (C-CHECK) RO 3/4/2021 REPLACED PAX DOOR MID DD3 INTERCOSTAL PER CRJ-900 SRM 51-42-06-001-001-A01, CRJ-900 SRM 51-42-21-001-001-A01 & DRAWING 601R31702 REV N. SEE CONTINUATION CARD FOR DETAILS. CHECKS GOOD. COMPLIED WITH TASK CARD 51-900-1002-SKY.