As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 41 - GEG TO ONT - PASSENGER REPORTED STREAM OF FUEL COMING FROM LEFT WING. MX PERSONNEL INSPECTED THE LEFT WING FLAPPER VALVE LEAKING. MX REMOVED AND REPLACED LEFT WING FLAPPER VALVE AND PERFORMED OPERATIONAL CHECKS SUCCESSFULLY. THE A/C WAS APPROVED TO RETURN FOR SERVICE.