I do not understand how, but surprisingly it works. After wearing my fingerprint on the iPad screen and when I was about to leave ... the plane undertakes a spectacular and very elegant flight. Amazing, but the experience as a player is frustrating. I think this level should have had more game.
@Jose Luis Galiano I use sorcery for this level. Spoiler Just kidding. There's a ball mechanism inside the stones. When you swing the bar hard enough over a certain threshold, it will jump pass a block and goes to another compartment, completing a series of sliders that will unblock the plane movement.