As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, ON WALKAROUND FOUND EVIDENCE OF OIL LEAKING FROM APU COMPARTMENT. UPON FURTHER INVESTICATION FOUND APU OIL CAP O-RING STRETCHED OUT OF SHAPE. REPLACED O-RING ON APU OIL CAP. SERVICED APU PER MM 12-13-04. LEAK CHECKED OK. NO FURTHER DEFECTS NOTED.