Jabba and Creampuff
It's not about Australia going alone. 1090ES is already there for RPT. A visit to a TAAATS centre demonstrates the marriage of ADS-B and MSSR information.
Safety improvements and for RPT? Jabba, if you closely read the relevant studies the issues are behavioural (and include RPT, increasingly so with fuel prices) and are not fixed by ADS-B IN. Although, it is of interest that the airlines always call for safety - as long as they are not paying. Have a read of the Avalon Study - what TCAS on one local short haul carrier?
Jabba, don't confuse surveillance with safety - first you need 'active' surveillance. What ATC surveillance of code 1200 in Class G? And what at CTAF where is the highest risk? Lots of paints on the screen - forget it - if you look at the Armidale study you will find the paints were masked to ATC because of the clutter.
I'm partly with Dick - on facts, not emotion - and Creampuff re this. If you study the purported benefits of the JCP, smoke and mirrors emerge. Take SAR as one example. Track the last ADS-B data to save us. Perhaps handy where ADS-B exists but whether or not it does one would far better initiate their 406 PLB for an instant SAR alert with one's details updated 3 times per hour and accurate to about 40 metres.
Having said that, if Airservices want to save $100M on radar etc - what's really in it for GA?