[But there was one thing i can`t explain. I was turning back into wind, had strong right aileron when the plane made quick turn to left and then continued to right. I blame wind but i really don`t know what it was.

Crow [/B][/QUOTE]

Probably got explanation for weird behavior. I use an airfield ment for big planes, and the place have a few radar buildings.
All the strange moves happen close to the radar, exactly in the same spot. Yesterday the rudder suddenly snapped right and left, fortunately went good. But friends trainer got into spin and crashed in same place.

Crow