What was found
IN CRUISE, FL 330, NR 1 ENGINE FAILED. OIL PRESSURE 0, OIL QUANTITY AND TEMPERATURE NORMAL. FUEL PRESSURE NORMAL. HYDRAULIC QUANTITY, PRESSURE AND TEMPERATURE NORMAL. ALL OTHER INDICATIONS NORMAL. REMOVED AND REPLACED NR 1 ENGINE. CLOSED COWLING IAW SMP. RAN NR 1 ENGINE IAW JRH, OPS CHECK AND LEAK CHECK NORMAL.