What was found
APPROX 45 MINUTES INTO FLIGHT AT FLT LEVEL 170 WHILE IN CRUISE FLIGHT CONDITIONS. RT ENGINE MADE AN UNUSUAL NOISE, FLAMES WERE SEEN FROM THE EXHAUST DUCTS. CREW INITIATED ENGINE SHUT DOWN PROCEDURES. CREW CONTACTED APPROACH CONTROL DECLARED AN EMERGENCY AND REQUESTED LANDING AT CLOSED AIRPORT. ACFT MADE UNEVENTFUL SINGLE ENGINE LANDING. THE FAILURE APPEARS TO BE CONTAINED IN THE POWER SECTION OF THE ENGINE. IT IS UNKNOWN AT THIS TIME WHICH COMPONENT MAY HAVE FAILED.