As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLEAT COMMON TO FRAME AT FS 313.56 AND FWD DD4 INTERCOSTAL HAS CORROSION, MARKED. C-CHECK RO 10/9/2020. REMOVED CORRODED CLEAT COMMON TO FRAME AT FS 313.56 AND FWD DD4 INTERCOSTAL, REF CRJ900 SRM 51-42-06-001-001-A01 AND INSTALLED REPLACEMENT CLEAT, REF CRJ900 SRM AND BOMBARDIER DWG.