Imagine that you are flying along in your own aircraft when, suddenly, the engine stops and you are not able to revive it. Now what?
If you have plenty of altitude, you can hit the button on that expensive aviation-dedicated GPS that will produce a list of the closest airports (not necessarily the closest airfield and certainly not the most suitable landing site) and based on your height and the distance to the airport, you alone get to decide if you can make it.
