As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
E1 OIL PRESSURE DECREASED TO AMBER RANGE IN FLIGHT. (CAPTAINS SAID IT HAPPENED 40 MINUTES INTO FLIGHT AT 35K FT, E1 OIL PRESSURE DECREASED INTO AMBER RANGE BUT NEVER TURNED RED.) FOLLWED QRH FOR LOW OIL PRESSURE WITH NI EICAS MSG PRESENT. STARTED WITH 12 QUTS OF OIL. GOT TO SDF WITH 10 QTS ON EICAS. REMOVED & REPLACED # 1 ENGINE, OPS CHECK GOOD.