As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 41 - GEG TO GEG - FUEL LEAKING FROM LEFT WING DURING CLIMB. MX REPO'D 568 FROM ONT WITH MX PERSONAL AND PARTS. MX INSPECTED FUEL TANK AND FOUND MOST O/B FLAPPER VALVE MISSING ON LEFT WING. MX INSTALLED NEW LEFT WING FLAPPER VALVE AND PERFORMED OPERATIONAL CHECKS SUCCESFULLY. THE A/C WAS APPROVED TO RETURN FOR SERVICE.