As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"INITIAL INSPECTION : CORROSION ON FLOOR SUPPORT FS280 BTW STGR 25LH TO 25RH AT MAIN AVIONICS COMPARTMENT ( E/E ) (TCI 100-09) "SUMMARY OF NRC 00193: DUE CORROSION LEVEL 2 ON ANGLE SUPPORT, CRAWLWAY FLOOR FS280 BTW STGR 25LH TO 25RH AT MAIN AVIONICS COMPARTMENT (E/E) WAS REPLACED PER CRJ/900 SRM 51-42-06-001-001-A01 AND 51-42-20-001-001-A01