Putting all this together, and apart from the telltale visual discrepancies, it was evident from first principles that no full-scale airplane could do what the model did -- that is, recover into controlled flight from a spin after the loss of a wing, climb vertically, fly an approach from downwind in knife-edge, roll level just in time to touch down, and stop in a few feet. (A pilot, on the other hand, might possess the required sangfroid. The late British acrobatic pilot Neil Williams experienced a partial spar failure in a Zlin in 1970. One wing began to fail upward, and Williams rolled inverted, flew an approach and rolled out in the correct direction to avoid overloading the failing wing.) On the other hand, the fact that it can be done by a model shows that it could be done by a piloted airplane with a similar thrust-to-weight ratio, regardless of the differences due to scale effects. Now that the trick's potential for worldwide celebrity has been demonstrated, I'm sure that it will only be a matter of time until we see an airplane with a turbine or rotary engine lose a wing in an airshow and land safely. Heck -- why lose just one? Why not both?