As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*PASSENGER CABIN FLOOR SUPPORT STRUCTURE RBL9 BETWEEN FS409.0 AND 409+112 HAS AREAS OF CORROSION AT FASTENER HOLES. (C-CHECK) RO:1/17/2020FOUND MULTIPLE LOCATION WITH 100% MATERIAL LOSS, CORROSION IS PRESENT ON MORE THAN 50% OF THE LENGTH OF PART. OUT OF LIMITS REF CRJ200 SRM 53-00-00.REMOVED AND REPLACED THE FLOOR BEAM AT RBL 9, FS409+5 TO FS409+118 REF BOMBARDIER REO.