My two cents, SBAS is a trial, across both Australia and New Zealand. NZ cannot afford the system in isolation, but can by partnering with Australia.
Aviation is probably not the main beneficiary, it is the trucking industry, mining industry, road vehicles, autonomous (in the future) vehicles, agriculture industry, Geo-science. The cost to aviation should only be a percentage, once they validate or not, through the trial, the implementation of SBAS.
One further point, the introduction of RNP/RNAV approaches improves safety approximately 20x on approaches and departures and with vertical guidance a further 8x.
Last edited by DassaultFalcon7X; 20th Apr 2018 at 03:26.