I just got my solo a month ago. As I understand it the solo has a barometric altimeter that calibrates takeoff altitude as zero. If this is true then I should be able to fly over a cliff at the canyon and the solo SHOULD maintain altitude and not fall like a rock (trying to find 10 feet at 1500 feet). Has anyone tried this? What happened? Also my friends want me to fly in a large hangar. What does solo do when it looses GPS?