As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT FLOOR SUPPORT BEAM AT FS280.00 IS CORRODED (C-CHECK) RO 3/4/2021 REMOVED AND INSTALLED NEW COCKPIT FLOOR SUPPORT BEAM AT FS280 REF CRJ 900 SRM 51-42-06-001-001-A01, 51-42-21-001-001-A01 AND BOMBARDIER DWG# SH670-33052 REV G. SEE CONTINUATION CARD FOR DETAILS. COMPLIED WITH 51-900-1002-SKY. COMPLETED FORM M-337.