What was found
(CAN) AT THE TOP OF CLIMB PHASE, A LOUD NOISE WAS HEARD FROM LT ENGINE FOLLOWED BY UNCOMMANDED IN-FLIGHT SHUTDOWN. THE ENGINE WAS SECURED, AND THE ACFT RETURNED TO DEPARTURE AIRPORT, WHERE A SINGLE ENGINE LANDING WAS PERFORMED. NO DETAILS ON ENGINE CONDITION ARE AVAILABLE AT THIS TIME. MFG WILL CONTINUE INVESTIGATING THE EVENT AND ADVISE OF ROOT CAUSE ONCE ESTABLISHED.