Radio call sign will only be AF1 if they want it to be. If there is a civilian airport with a ground operation waiting for AF1, then it the flight will probably call itself AF1 when communicating, unless there have been other arrangements made with the ATC/authorities at the airport.
Radio call sign will only be AF1 if they want it to be. If there is a civilian airport with a ground operation waiting for AF1, then it the flight will probably call itself AF1 when communicating, unless there have been other arrangements made with the ATC/authorities at the airport.