Originally Posted by
ATC Watcher
As far as I know the US does not currently use ADS-B as sole means of surveillance with 5 NM lateral separation , like Australia and Canada do.
That really is not the point. The ADS-B report is a position report and will be used as that; it must not be wrong. In many multisensor systems and mosaiced systems the controller could be unaware that the track is being supported solely by ADS-B. ANSPs who mandate ADS-B operation in their airspace should ban those aircraft with defective ADS from operating in their airspace. That might hasten action by dilatory operators.