As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON CLIMB A LOUD BANG WAS HEARD ACCOMPANIED BY YAW AND INDICATIONS OF ENGINE STOPPAGE. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO POINT OF DEPARTURE. THE CREW REPORTED THE PROPELLER DID NOT FEATHER ON SHUTDOWN AND ALTERNATE FEATHER PROCEDURES WERE EMPLOYED. AN EXTERNAL OIL LEAK WAS VISIBLE DURING POST FLIGHT INSPECTION.