As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PAX DOOR AFT DD1 INTERCOSTAL IS CORRODED. C-CHECK RO 12/05/2020. PAX DOOR AFT DD1 INTERCOSTAL ORIGINAL MATERIAL THICKNESS IS 0.050", IAW CRJ 200 SRM. EXFOLIATED CORROSION AT MULTIPLE LOCATION AND MORE TWO ELEMENT AT GIVEN CROSS-SECTION OUT OF LIMITS, IAW CRJ 200 SRM. INSTALLED NEW PAX DOOR AFT DD1 INTERCOSTAL, IAW CRJ 200 SRM AND BOMBARDIER DWG. LEAK CHECKS GOOD.