As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT ITEM: DURING A POST FLIGHT WALK AROUND OF THE AIRCRAFT IN GUM, THERE WAS EVIDENCE OF A HEAVY OIL LEAK COMING FROM THE APU AREA. FURTHER INSPECTION REVEALED THE APU GENERATOR WAS LEAKING OIL. THE GENERATOR WAS REPLACED AND CONFIRMED OPERATIONAL ON THE GROUND AND NO LEAKS NOTED.