As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A 100 HR/ANNUAL INSP, BAGGAGE FLOOR PROTECTIVE PANEL WAS REMOVED TO INSPECT THE BAGGAGE FLOOR PANEL. CORROSION WAS NOTED AROUND AN INSERT AREA AND FURTHER INVESTIGATION FOUND THAT CORROSION HAD PENETRATED THE UPPER SKIN, AND WAS MOVING INTO THE HONEYCOMB STRUCTURE. THE PANEL WAS REPLACED WITH AN O/H PANEL. THE PANEL WAS ORIGINAL TO THE ACFT.