As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
KOSC - DURING C-CHECK INSPECTION FOUND UPPER SKIN PANEL JUST FORWARD OF CENTER SPAR AT APPROXIMATELY STA XRS 152 - CORROSION REMOVAL EXCEEDS 20 PERCENT OF PANEL THICKNESS. REPAIRED IAW SKETCH AIA/E/2102 AT RT WING CENTER SPAR AREA AT STA XRS 152. (X)