As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - A/C CURRENTLY IN C-CHECK WHEN INSPECTION FOUND THE RT FLOOR SILL CORRODED FROM FR 48 TO FR 52. MAINTENANCE REMOVED AND REPLACED THE FLOOR SILL IAW EMB 145XR SRM 51-40-02;09, 51-20-03 AND CPM 51-21-07. ALL WORK WAS ACCOMPLISHED AND WILL BE RELEASED AT THE END OF THE CHECK.