I had an uncontrollable flyaway in 2017. Caused by low battery Temp. Airtime was -10-15C and battery was not +15C as per DJI later. I noticed that my controller still had the drone up on the screen and I went out searching for it in mountainous terrain, a foot of new snow. As I was observing the controller screen I noticed that the drone symbol flipped around and I could be near it. Retraced my steps back about 10' and found my broken drone in the snow. I had walked right by it. the controller was very powerful at finding it. I was desperate as I had to find it before the drone battery died.