As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN FUEL TANKS WERE FILLED TO ABOVE 35 GALLONS, HIGH AMBIENT TEMPERATURE CAUSED FUEL TO LEAK FROM VENT TUBE. REMOVED LEFT FUEL BAY INSPECTION PLATE AND FOUND THAT THE FUEL VENT TUBE INVERTED CHECK VALVE S2359-1 ALSO INVERTED FROM FACTORY. ROTATED 180 DEGREES TO CURRENT POSITION. INSPECTION PLATE SHOWED NO SIGN OF EVER BEEN REMOVED.