Thanks for your answer, I've tried to save the first part of the animation and then load it in a new file, but how can I delete the first frames? Infact I deletede the key-frames, but the result now the animation goes from the beginning "positions" directly to the end "positions". You seggested me to save only the last frame, but how could I do it, is there an "hidden" option? Thanks a lot for your suggestions and I'm happy that you like my AA-01 (this is the name of the plane that I've modeled) See you Andrea