As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD AFTER RECEIVING LOW OIL QUANTITY INDICATION FOLLOWED BY LOW OIL PRESSURE INDICATION ON NR 1 ENGINE. NR 3 BEARING EXTERNAL SCAVENGE LINE FAILED (LR04) LEAKAGE WAS DUE TO CRACKING OF THE INTERNAL PTFE (POLYTETRAFLUOROETHYLENE) LINER. THIS LEAD TO OIL PRESSURE BUILDUP UNDER THE FIRESLEEVE, WHICH EVENTUALLY BURST. NO EVIDENCE WAS FOUND OF DAMAGE TO THE WIRE BRAID. (CORROSION, KINKS, ETC.)