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In 1993 I went to Russia for 4 weeks to fly with Genna Elfimov in YAK 52's .
One day we experinced inverted and normal spin procedured for competition.
One sortie resulted in a very flat spin that did not seem to respond to normal, power off, opposite rudder, stick forward recovery.
I imputed inspin aileron and stick back. as per ERIC MULLER method.
Genna went beserk, "Never stick back he screamed " we recovered and after landing debriefed. He expalined on the board the 4 different spin recovery techniques from YAK 52 to jet fighters. It was all about getting some fluid over any controll surface. I had Eric's book on aerobatics with me and he borrowed it.
The next day he announced we would try Eric's recovery method. I exclaimed that he had convinced me that the method was flawed. "What if it doesn't work " I said. "The we get out of aircraft" he stated calmly.
We climbed to about 3000 mtrs and started to increase the spin to a very flat profile with power. We then followed Eric Mullers recovery and the YAK stopped on line.
On landing he announced "OK there are now 5 ways of spin recovery"
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