As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*PASSENGER DOOR - DD3 IS CORRODED FORWARD OF FORMER FS310.75. (MARKED) (C-CHECK RO 9/8/2021) REMOVED AND REPLACED CORRODED DD3 WITH NEW UNIT. REF CRJ900 SRM 51-42-06-001-001-A01 AND DWG 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECKED GOOD. SEE CONTINUE CARD FOR DETAILS FO WORK PERFORMED.