As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON ENTERING AIRCRAFT, NOTICED A VERY STRONG MILDEW ODOR. AFTER THE PRELIMINARY INSPECTION WAS DONE AND DURING THE DISASSEMBLY OF THE INTERIOR, FOUND THE PROBLEM TO BE SEVERAL LEAKING CABIN WINDOWS. THEN THE SEAT RAILS WERE FOUND SEVERELY CORRODED AROUND THE MOUNTING SCREWS. ONE, UPON REMOVAL, BROKE INTO TWO PIECES.