As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY ONE HOUR INTO FLIGHT, SUSPECTED FUEL LEAK FROM THE LEFT OVERWING FUELING CAP. DECLARED AN EMERGENCY AND DIVERTED WITHOUT FURTHER INCIDENT. REPLACED THE FUEL CAP O-RING IAW AMM 28-11-04-004-001 REPLACED THE CAP, LEAK CHECKED OK.