er..... I don't understand. If you enter autorotation, it removes all of the torque from the main rotor and thus the tail rotor becomes largely redundant (just a bit of opposite due to drag in the gearbox). If you have a tail rotor failure why would you not just autorotate into any decent sized field? This has got to be a lower risk choice than trying to figure out the speed at which the slipstream fails to provide sufficient and then attempting to judge an approach to run on at just above said speed. Plus, autorotations should have been well practiced during training. I don't come at this with no previous, I have 86 hours in R22b.
Help me here.