What was found
IFSD DURING REVENUE FLIGHT, A FEW MINUTES AFTER TAKEOFF, A LOW OIL PRESSURE WARNING CAME ON WITH SMOKE IN THE CABIN. THE RT ENGINE SHUTDOWN BY ITSELF AND AN EMERGENCY DECLARED. UNEVENTFUL LANDING BACK TO POINT OF ORIGIN WAS PERFORMED (FAA SDR 2010091100220/DXTA2010081604190).