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 AT FUSELAGE STRUCTURE BTW FS 565 / FS 581 AND STGR 22L/23L (C1). SUMMARY OF NRC 00257 CORROSION LEVEL 2: FLOOR SUPPORT AT FUSELAGE STRUCTURE BTW FS 565 / FS 581 AND STGR 22L/23L WAS REPLACED PER CRJ 900 SRM 51-42-06-001-001-A01 PAR.6A AND 51-42-02-001-001-A01.