Check this raw video from yesterday. Please forgive the old fashioned gimbal.
Skip ahead to the 1:50 mark. I'm flying across the cornfield with 12 mph head winds so I'm trying to keep it low. My app crashes at about this point. I know I'm going to hit the trees if I don't gain altitude (the ground here is about 80 feet above my launch point - I'm flying uphill) so I do left stick up in the blind while trying to reload my Litchi app.
My app is not up yet but as you can see, as I go over the trees I level out and everything is fine. Meanwhile I'm waiting for my app to reconnect. At about 2:20 I level out and everything seems fine as my app reconnects. But then I get an AC lost Signal message which is unusual because usually I lose FPV first. Then the message vanishes and everything seems okay again. Then again I get the message that AC lost signal. Then my app crashes again!
Looking at the video afterwards, my AC RTH'd but if you study what actually happened, the AC actually lost elevation as it approached the high voltage wires and came dangerously close. It would have cleared them I think, but still, why did it lose elevation? Flytrex showed the AC dropped 70 feet on its own. I will study this further. But as you can see, on the turn around I'm much lower, and now in RTH I'm much closer to the trees I just went over. 70 feet is a lot of feet to be dropping inadvertently. It could be the wind hitting the tree line was doing funny things to the air pressure, but still...
Now pause at 3:20. A hawk is swooping in at high speed on the port side and seems to just miss the AC. Go frame by frame to get a good look. You can actually see the color detail of his feathers. You can first see him as a tiny dot at 3:18. He whips by at 3:21.