FlightAware Discussions

Mode S?

Hello everyone,

I have a question regarding the ADS-B system. Did it receive information about all mode S transponder? I mean private ones and commercial when ATC gives them a transponder code.

Yes, even the private ones have a squawk number, in general 7000 in Europe.

The transmission of the plane coordinates depends on the equipement on board. A lot of commercial flights do not transmit the position as we often have private flights sending they position. Same for military flights (at least here in France).