My son used my device on Friday and he told me that when flying SD showed his exact position on the chart but the aircraft symbol was orientated 90 degrees away from his track and the projected line in front of the aircraft pointed the same direction as the aircraft symbol. I thought the device was faulty (chinese no name) and I loaded the  software onto my 4.3 inch Airbox AWARE. and on his return flight it did the same thing. He was in a Strike master jet and travelled at approx 240 knots. his entire flight was West to East and then returning East to West, so the aircraft symbol pointed North on the 2nd trip and he can't remember  whether it was pointing North or South on the first trip because he just turned it off in frustration.  Could the speed make it do that? Any ideas? or some interference from the jet.