What was found
NUMBER 1 ENG DISPLAYED LOW OIL PRESS & ZERO OIL QTY. WE SHUT NR 1 ENG DOWN AS INSTRUCTED BY CHECKLIST. WE LANDED WITH NO OTHER FAILURES. CRUISE POWER SETTING ALTITUDE 32000, OIL QTY 0, 20 PSI TO 0, AFTER 10 - 15 MIN 0 PSI INDICATED, APPROX 20 - 30 MIN TT. R & R NR 1 ENG IAW TASK CARD 71-080-003. R & R CVR IAW AMM 23-70-00. NR 1 ENG UPPER & LOWER CONE BOLTS REPLACED DURING ENG CHANGE. R & R DRAIN SERVICING PAD O RING LEAK CHECKED GOOD IAW AMM 24-10-01. R & R PT2 LINE IAW TASK CARD 71-080-003.