I'm out in Breckenridge, CO and launched my Phantom 2 today and ran into a problem. I just went straight up about 70 meters and I was going to turn it 360 for a pan view and all of the sudden it went into the no fly failsafe GPS home. Right as this was happening a small airplane flew overhead somewhat low altitude but not anywhere near the height of my Phantom. The failsafe was the same as if I was in the 5 mile radius of an airport, but the closest small airport is 35 miles away. So I'm wondering if an airplane is close enough to the Phantom does it emit a signal like airports that cause a no fly failsafe?