[quote=flyer]As an airline pilot, I’m extremely familiar with everything you’ve mentioned, but I’d still like to see a tracking system that could not be deactivated in flight, so, regardless of the scenario, we could get the last known position of the aircraft.[/quote]
It would have to not use GPS since GPS reception is easy to jam with jammers being easily available. Perhaps a combination of GPS data being sent to a satellite uplink (using a transponder with internal batteries charged independently of the aircraft electrics) and a simple radio signal that can be triangulated if GPS is jammed would work.