What was found
(CAN) FLT 8613IN CRUISE AAT 28,000 FEET FROM MONCTON (YQM) TO TORONTO (YYZ), CAREW EXPERIENCED SUDDEN SHORT VIBRATIONS. ENGINE PARAMETERS WERE NORMAL, HOWEVER, VIBRATIONS BECAME WORSE, ACCOMPANIED BY 2 BIG BANGS. CREW THEN NOTED NR 2 ENGINE TGT HAD EXC EEDED 540C,& NOW PEGGED AT 640C. SEVERE ENGINE DAMAGE DRILL CARRIED OUT,&EMERG DECLARED. A/C INITI ATED DESCENT FROM 28,000 FEET, & LANDED IN YYZ ON ONE ENGINE, WITH NO FURTHER EVENTS. A/C CAME TO STOP ON THE TAXI-WAY,&AFTER INSP & CLEARANCE BY FIRE RESCUE, TAXIED TO GATE FOR DEPLANING OF PASSENGERS.MAINT INVEST. REVEALED MAJOR DAMAGE TO NR 2 ENGINE VISIBLE LP1 & LP2 TURBINE BLADES & STATORS, AS WELL AS TO EXHAUST CASE & STRUT. CONTAINMENT NOTED.