As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF PAX DOOR FWD SERRATED PLATE, DISCOVED CORROSION ON MOUNTING SURFACE AND ADJACENT AREA AT F.S 310.00 STGR 16A AND STGR15A (C-CHECK) RO 5/16/2020 REMOVED AND REPLACED CORRODED GUSSET PN 601R31109-97 WHICH INCLUDED CORROSION ON MOUNTING SURFACE AND ADJACENT AREAS IAW CRJ 200 SRM