But if you were broadcasting location and velocity at all times, even if an aircraft lost power, you could project where the "unplanned water landing" would occ

But if you were broadcasting location and velocity at all times, even if an aircraft lost power, you could project where the "unplanned water landing" would occur. That seems helpful. I wonder if Google's Project Loon [1] would be of any use here. [1] http://www.google.com/loon/how/ http://www.google.com/loon/how/