What was found
DURING CRUISE FLIGHT, NR 2 ENGINE THROTTLE LEVER BEGAN VIBRATING WITH ASSOCIATED MILD ACFT VIBRATION FELT. RAN QRH AND REDUCED NR 2 THROTTLE TO IDLE. SHORTLY AFTER REACHING, NR 2 ENGINE EXCELLERATED TO 92 PERCENT N2 AND REMAINED THERE WITH THROTTLE LEVER AT IDLE. ALL ENGINE PARAMETERS REMAINED WITHIN LIMITS. ENGINE NR 2 WAS SHUTDOWN PRIOR TO LANDING.WINDMILLING OIL PRESSURE WAS OBSERVED AFTER SHUTDOWN. ENGINE NR 2 OIL PRESSURE WAS NORMAL PRIOR TO SHUTDOWN. FOUND MULTIPLE TURBINE BLADES MISSING INCH LONG SECTIONS. REMOVED & REPLACED NR 2 ENGINE IAW W/C 70T0002, OP'S & LEAK CHECK NORMAL. OK TO CONTINUE.