Thanks JP & Max,
Sometime ago, I think it was a R&W issue early 1999 there was an article about an instructor who had made over 5000 practice auto´s, then the real one occured and he bent the aircraft badly due to the fact that an real auto was substantially different to the practised ones in regards that, in this instance, an Alison 250 still some power provides to the rotorsystem in a practise auto, sufficiently to make a difference...?