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 VARIOUS AREAS OF CORROSION IN THE LOWER FUSELAGE BETWEEN FRAMES 13 AND 14, STRINGERS 20L TO 20R. MAINTENANCE REMOVED AND REPLACED THE SKIN, ALLODINED, PRIMED AND PAINTED. ALSO REMAPPED THE RVSM AREA. RVSM PASSED. ALL WORK ACCOMPLISHED IAW EC 5330-02479 AND WILL BE RELEASED AT THE END OF THE CHECK.