As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*PASSENGER DOOR €“ DD4 IS CORRODED FORWARD OF FORMER FS310.75. (MARKED) (C-CHECK RO 9/8/2021) REMOVED & REPLACED WITH NEW INTERCOSTAL PASSENGER DOOR €“ DD4 IS CORRODED FORWARD OF FORMER FS310.75 REF CRJ-900 SRM 51-42-06-001-001-A01 AND BOMBARDIER DWG #601R31702 REV -N.COMPLIED WITH 51-900-1002-SKY. OP'S TEST AND PRESSURE LEAK CHECK GOOD.