As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN LT SIDE CREASE BEAM WEB BELOW AFT OVERWING EMERGENCY EXIT, OTBD EDGE HAS CORROSION BY THE 4TH RIVET FROM THE FWD EDGE. CORROSION REMOVED AND FOUND TO BE OUT OF LIMITS. REMOVED AND REPLACED THE WEB IAW SRM 51-40-02 AND DWG 144N5140.