As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR FRAME IS CORRODED INSIDE OF THE VENT FLAP STRUCTURE ON THE AFT SIDE OF CUT OUT. C-CHECK RO 12/30/2020. REMOVED AND REPLACED PAX DOOR FRAME AT FS 349, IAW CRJ 200 SRM. COMPLETED TASK CARD AND ATTACHED COMPLETED FORM 337. NO WEIGHT CHANGE NOTED.