Every test flight I've made so far has had at least one or more "compass errors" for a short time. I've calibrated everything, and calibrated the compass just before the flight. Funny thing is after touching the compass calibration button on the iPad I've noticed sometimes the iPad compass calibration page comes up. I cancel this and calibrate the Phantom 3A normally. Any thoughts the iPad compass is somehow causing these errors? No errors in the log. At all.