As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF TORQUE/IFSD DURING FLIGHT, THE PILOTS OBSERVED LT ENGINE SURGING AND TORQUE OSCILLATIONS. CREW SHUTDOWN ENGINE AND AN UNEVENTFUL SINGLE ENGINE LANDING AT THE INTENDED DESTINATION FOLLOWED. THE CONDITION OF THE ENGINE IS UNKNOWN BUT IT WILL BE REMOVED AND FORWARDED FOR INVESTIGATION AND REPAIR.