What was found
(CAN) ON CLIMB OUT TORQUE INCREASED WITH ALTITUDE, ACCOMPANIED BY ENGINE VIBRATION AND ENGINE NOISE. ENGINE WAS SHUTDOWN AND THE AIRCRAFT RETURNED TO POINT OF DEPARTURE. POST FLIGHT INSPECTION REVEALED METAL IN THE CHIP DETECTOR AND OIL FILTER OPERATING IN BYPASS DUE TO CONTAMINATION IN THE OIL FILTER. DAMAGE IS SUSPECTED IN THE AREA OF THE #4 AND #5 BEARINGS. THE ENGINE IS BEING SENT TO PRATT & WHITNEY FOR ANALYSIS AND REPAIR.