As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN ENGINE EXHAUST PIPE FAIRING CHANGE, DISCOVERED A STEEL BRAIDED FUEL VENT LINE HAD CHAFED INTO THE TOP SKIN OF THE LEFT WING NEAR THE EXHAUST PIPE. THE CHAFED AREA WAS 1.25 INCHES LONG, .4375 INCH WIDE BY .017 INCH DEEP. FAIRCHILD ENGINEERING DETERMINED THIS WAS STILL SERVICEABLE. RECOMMEND THIS AREA BE INSPECTED ASAP.