As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C-CHECK, THE LT FLOOR SILL FRAME 24-25 HAS BARE METAL EXPOSED SURFACE CORROSION. MAINTENANCE REMOVED CORROSION BEYOND LIMITS AND REPLACED LT SILL AT FRAME 24 THRU 29 IAW SRM 53-21-00-220-CO7. ALL WORK WAS ACCOMPLISHED AND WILL BE RELEASED AT THE END OF THE CHECK.