What was found
PS NORMAL THROUGH 10,000 FT. CLIMBING THROUGH ABOUT 10500 FT THE PILOT NOTICED THE RH TORQUE GAUGE BEGIN TO FALL, THEN THE RH OIL PRESSURE LIGHT CAME ON. PILOT FELT A YAW, WAITED ABOUT THIRTY SECONDS TO CONFIRM FAILURE, SECURED THE ENGINE AND RETURNED BACK TO BIL.