As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRESSURE FLOOR PANEL AT FS 531.00 RBL 42 HAS CORROSION. AIRCRAFT REMOVED FROM SERVICE. REMOVED CORROSION FROM PRESSURE FLOOR PANEL AT FS 531.00 RBL 42. EVALUATED BLEND AREA AND FOUND TO BE WITHIN ALLOWABLE LIMITS. HFCC INSPECTION PERFORMED WITH NO INDICAIONS NOTED. REF ASAP EA# AWAC - CRJ253-01566. REV IR, 02/02/2021.