What was found
LOST OIL PRESSURE & QUANTITY ON NR 4 ENGINE AT 1439Z. PERFORMED CHECKLIST FOR ABNORMAL OIL PRESSURE, SHUT ENGINE DOWN, MONITORED ALL OTHER ENGINE FUNCTIONS UNTIL LDG AT MCO. CORRECTIVE ACTION : FOUND OIL CAP OFF, PUT CAP BACK ON. SERVICED WITH OIL, RAN ENGINE. OPS CKS NORMAL AS PER 79-10.