As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) APPROX. 1 HOUR AFTER TAKE OFF, NR 3 OIL QUANTITY INDICATED AMBER, NR 3 OIL PRESSURE WENT INTO RED (6PSI) ACCOMPANIED BY ECAM ADVISING TO SHUT DOWN ENGINE. AIRCRAFT RETURNED TO VANCOUVER. FOUND NR 3 ENGINE STARTER DRIVE SEAL LEAKING. SEAL REPLACED AND GROUND RUN CARRIED WITH NO LEAKS. AIRCRAFT SERVICEABLE.