What was found
ORD - FLT 5708 - DURING CLIMB, THERE WAS A LOUD POP FROM THE LEFT SIDE. IMMEDIATELY THE NR 1 ENGINE OIL PRESSURE, ENGINE CONTROL CWP ILLUMINATED WITH NR 1 ENGINE FROZEN PBSI ILLUMINATING. SHORTLY FOLLOWING THE NR 1 ENGINE ASSOCIATED ELECTRICAL CWP'S ILLUMINATED AND NR 1 TORQUE READ 0. MAINTENANCE REMOVED AND REPLACED THE NR 1 ENGINE. PERFORMED POWER ASSURANCE RUNS WITH NO DEFECTS NOTED. SYSTEM OPS CHECKED GOOD. (M)