This Isn’t the First Time that a Giant Plane With GPS Tracking Has Vanished

[Duckhunter935]

7. I was thinking about that also

And a pilot and investigator explained the same thing. They have to be turned off on the ground. There is another system that is coming online to get around this and will always tag a planes position that can not be turned off. With this I wounder if the present system could be modified to shut down at say 100-500 feet automatically without the pilot being able to switch it off.

The first piece of that system — which carries the cumbersome label of Automatic Dependent Surveillance-Broadcast, or ADS-B — is a new form of transponder that broadcasts to ground stations more precise information than does radar.

ADS-B data will pinpoint a jet’s location using GPS technology and will also include the plane’s trajectory, which radar data does not.

And while long-range radar towers sweep around up to about once every 16 seconds to get a fix on an aircraft’s position, ADS-B will fix its location every second.

All the planes that roll off the Boeing and Airbus assembly lines now come with ADS-B preinstalled.

The technology will be mandatory for airliners flying in the U.S. by 2020, and two years earlier in Europe.

http://seattletimes.com/html/businesstechnology/2023134658_airplanesflighttrackingxml.html