Regulations and Government
Aircraft Tail Blocking Complicated by ADS-B OUT Systems
There currently is no physical means to block reception of mode-S transponder or ADS-B signals by a simple receiver.

As more aircraft equip with ADS-B OUT–which broadcasts position, velocity, altitude and other information in unencrypted formats on easily received frequencies–business aircraft operators are concerned about whether they can continue blocking their aircraft from display on flight-tracking websites. While the FAA offers a way for operators to request blocking of particular aircraft from FAA radar data feeds, there currently is no physical means to block reception of mode-S transponder or ADS-B signals by a simple receiver.

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