What was found
DURING FLIGHT PILOT HEARD MUFFLED BANG AND EXPERIENCED YAWING OF FUSELAGE WITH RELATED HIGH TOT INDICATION OF NR 2 ENG. ENGINE SHUT DOWN AND EMERGENCY LANDING CARRIED OUT. AC RECOVERED BY ROAD TO MAINT FACILITY. INVESTIGATION REVEALED MINOR DEBRIS ON ACCESSORY GB, CHIP DETECTOR AND COMPRESSOR/ POWER TURBINE SPINS FREELY BY HAND BUT, WITH COMPRESSOR TURNING ACCESSORY DRIVES DO NOT ROTATE. ENG MODULES SEPARATED AND COMPRESSOR ADAPTOR FOUND SHEARED. ALERT BULLETIN HAS NOT BEEN COMPLIED WITH ON THIS ENGINE AND MFG MAY SET AN OPER TIME LIMIT.