What was found
NR 2 ENGINE SHUT DOWN AT FLIGHT LEVEL 310 DUE TO LOSS OF OIL QUANTITY AND PRESSURE. RETURNED TO FIELD. *S/D* FOUND CUT O-RING ON MAIN OIL FILTER COVER. REPLACED O-RING, MOTORED ENGINE AND FOUND NO LEAKS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
NR 2 ENGINE SHUT DOWN AT FLIGHT LEVEL 310 DUE TO LOSS OF OIL QUANTITY AND PRESSURE. RETURNED TO FIELD. *S/D* FOUND CUT O-RING ON MAIN OIL FILTER COVER. REPLACED O-RING, MOTORED ENGINE AND FOUND NO LEAKS.