As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VAPOR RETURN LINE WAS CHAFED THROUGH BY RUBBING ON THE EDGE OF THE FUEL TANK. A GROMMET IS SUPPOSED TO PREVENT THE CHAFING, BUT ONLY HID THE DAMAGE. CLOSE INSPECTION OF BOTH THE VAPOR RETURN AND THE FUEL FEED LINES FOR THIS TYPE OF DAMAGE SHOULD BE DONE AT ANNUAL, BUT IS NOT MENTIONED IN SERVICE DATA.