What was found
(CAN) FLIGHT CREW REQUESTED IMMEDIATE RETURN TO YOW SHORTLY AFTER TAKEOFF DUE TO NR 1 ENGINE FAILURE (PILOT SHUTDOWN). EMERGENCY SERVICES CALLED OUT. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTION REVEALED 'TURBINE FAILURE'. AIRCRAFT STILL ON GROUND IN YOW - SPARE ENGINE ENROUTE. FAULTY ENGINE BEING SENT TO OVERHAUL FACILITY FOR POSSIBLE CAUSE OF ENGINE FAILURE. AWAITING 'TEARDOWN REPORT'.