As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL LINE HAD A LEAK THAT SEEMED TO BE INTERMITTENT. APPARENTLY, THE VARIED TENSION IN RELATION TO WING AND CABIN ALLOWED THE OPENING TO OPEN FURTHER. INVESTIGATION REVEALED A PIN HOLE CAUSED BY CORROSION AS THE CAUSE. THE CORROSION APPEARED TO BE CAUSED BY MOISTURE HELD AGAINST LINE AT THE UPPER CHAFE STRIP. NOTE: AIRCRAFT HAS MINIMAL SURFACE CORROSION ON REMAINDER OF AIRCRAFT.