What was found
(CAN) ENGINE WAS SURGING, SHOWED HIGH ITT, BANG WAS HEARD. ENGINE WAS SHUTDOWN. NORMAL LANDING CARRIED OUT. PROP DIDN`T COMPLETELY FEATHER, AND SLOWLY ROTATED. UPON UNEVENTFUL LANDING THE PROP FEATHERED AND WAS UNABLE TO BE TURNED BY HAND. NO OTHER ISSUES WITH ENGINE. NO FLUID LOSS, SMOKE, ETC. ENGINE AND PROP REPLACED. ENGINE SENT FOR INSPECTION AND REPAIR.