As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CYLINDER HEADS WHICH ARE THE CAPS TO THE MLG STRUTS WERE FOUND SEVERELY RUSTED. THE ATTACHING BOLTS WERE RUSTED BADLY ALSO. THIS AREA HAS A BUILT-IN WELL AREA WHICH ALLOWS WATER TO ACCUMULATE AND JUST SIT THERE. THERE IS A METAL PLUG BUTTON USED TO COVER THIS AREA AND FILL THE HOLE IN THE WING OVER THE FILL VALVE.