As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SERVICE DOOR AFT LOWER PAN HAS CORROSION. C-CHECK RO 10/4/2020. REMOVED CORROSION ON SERVICE DOOR AFT LOWER PAN, REF CRJ 200 SRM. REMIANING MATERIAL THICKNESS FOUND TO BE OUT OF LIMITS. REMOVED AND INSTALLED NEW SERVICE DOOR AFT LOWER PAN, REF BOMBARDIER DWG AND CRJ200 SRM. COMPLIED WITH TASK CARD. LEAK CHECK GOOD.