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I know absolutely nothing about this so forgive me if I'm asking a dumb question. ADS-B broadcasts so that other planes can figure out where you are and avoid you, correct? Why can't spy planes stop broadcasting it, but then listen for other planes' ADS-B signals, and just make sure to stay away from them? That way the only crash might be between two different spy planes?


It isn't mandatory. It'll be mandatory by 2020, but for now, these planes need to broadcast ADS-B.

http://en.wikipedia.org/wiki/Automatic_dependent_surveillanc...


There has been quite a few incidents in Europe concerning a certain neighbor of the EU doing this [1].

[1] http://www.google.com/search?q=transponder+russia


ADS-B isn't so much that it keeps 'your' plane from colliding with another one.

It's used to keep other planes away from you.

If there's an ADS-B broadcast for a specific location, then the autopilot on all other airplanes will automatically avoid that location.




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