What was found
NR 1 ENGINE OIL PRESSURE LIGHT ILLUMINATED; OIL PRESS GAUGE INDICATED 25 PSI, FOLLOWED BY A LOSS OF OIL QUANTITY, WENT TO ZERO. PERFORMED OIL PRESSURE LIGHT ILLUMINATED CHECKLIST; THEN, PERFORMED IN-FLIGHT ENGINE SHUTDOWN ABNORMAL CHECKLIST. ENGINE SHUTDOWN AT 18:17Z, AFTER EVALUATION, CONTINUE TO MIA. REMOVED AND REPLACED NR 1 ENGINE IN ACCORDANCE WITH ARROW AIR TASK CARD DC8UN-003; PERFORMED ENGINE RUN-UP FOUND NORMAL IN ACCORDANCE WITH DC8 MM 71-00.