The Robinson Flight Safety video certainly scared me as a fixed wing pilot. 1.1 Seconds for the rotor rpm to decay to a critical level does not seem allow a lot of reaction time if there are other distractions in the cockpit. I appreciate that this is a worst case scenario, but it certainly made me think. The other point made was that autorotation is a pretty quick process when trading height for maintaining rotor rpm. Descent at 1,500 ft per minute doesn't give a whole lot of time to pick a landing spot. Okay, two engines make it more unlikely, but there appears to be virtually zero margin for error. Makes one appreciate just how skilled helicopter pilots are considering the accident rates per flying hours.