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, INSPECTION FOUND PITTING ON THE COCKPIT FLOOR SKIN AT FRAME 14 BETWEEN STRINGER 16L TO 16R. MAINTENANCE REMOVED AND REPLACED THE SKIN IN THE EFFECTED AREA AND REMAPPED THE RVSM OF THE LT AND RT REGIONS IAW EC 5330-02058. ALL WORK ACCOMPLISHED AND WILL BE REL AT THE END OF THE CHECK.