S.O.S. / Info screen
OK, this is a special request, but it's a standard emergency feature in commercial varios, I've been told.
An S.O.S. button, which if pushed shows your position at the time of pressing the button.
- I can imagine the best would be a full screen popup, with a big Close button at the bottom, showing in huge letters the latitude-longitude in 3 coordinate formats + elevation. (D.ddddd, D M.mm, D M S, in whatever precision you believe is the best.)
- It should not update but show the coordinates when pressed. The reason for this is pilots can fly exactly above an accident's position and push this button. After that they can continue with their flight and communicate the coordinates to the rescue teams.