With ADSB wherever there is an outlet- and there will be 100's across Australia the ADSB equipped aircraft will appear on the ATC screen in Brisbane or Melbourne.
With transponders and TCAS the traffic will only appear on the TCAS screen in the aircraft when away from radar coverage.
This will mean ,just as now, ATC will not have paints of low level transponder equipped VFR aircraft on their screens from remote parts of Australia.
The difference is substantial and is no doubt why the FAA is not planning to mandate ADSB below 10,000' in non terminal areas.
Last edited by Dick Smith; 29th Sep 2008 at 07:36.