What was found
NR 1 ENGINE COMPRESSOR STALLED AND SUBSEQUENTLY SEIZED. OIL PRESSURE AND N2 WENT TO ZERO. NR 3 BEARING FAILED. OUTER RACE FRACTURED, BEARING CAGE DISINTEGRATED, ALL BALL BEARINGS WORN APPROXIMATELY 25 PERCENT ON OPPOSING SIDES. REPLACED ENGINE. CORRECTIVE ACTION ALREADY IN PLACE PER EXISTING AD NOTE, AND MCD CHIP RE-INSPECTION INTERVALS HAVE BEEN REDUCED FROM 125 FLIGHT HOURS TO 45 FLIGHT HOURS.