Oh ok. I am going to test again disconecting the servos. Maybe the default values were lost. One question about that. It is possible that when the arduino is connected and not configured values of min/max positions, that not start at position 1500, and instead of that, start to read from the actual position? In my case when configure the fist time, the servos tried to move to a position that could not move mechanically and that cause that the Xplane crash. So, I had to use another free servo to configure the min/max position and then connect the correct servo.
Thanks for your answer!