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Tail numbers and flight paths is publicly available information.

https://registry.faa.gov/aircraftinquiry

https://www.faa.gov/air_traffic/flight_info

So is your license plate number, and you have no reasonable expectation of the privacy of that information... but you wouldn't be happy if someone went around tracking everywhere you went now would you?

How are those two things related at all?

1090 MHz

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