Chocks,
Ideally it would be from the south if not for the "Rich & Famous" (read egocentric) living South under the approach, ....
Um Really? The prevailing weather is E-SE, so wouldn't it ideally have to be from the north? The Gold Coast airport master plan for the ILS installation has a fairly extensive weather analysis to resolve which runway it needs to go on. An ILS from the south would ultimately help nobody...
....plus the 2 spot heights infringing ILS terrain clearance. It may have to be offset like the VOR.
Terrain to the south is relatively flat, there are no infringing spot heights and this isn't the reason the VOR is offset. The VOR is offset because the VOR is not aligned with the centreline.
In from the North is doubtful, as a visual segment to align with rwy centrelink would still be needed once inside the hill as per current ops.
The concept procedure has already been designed to be runway aligned from the north. No visual segment required and Currumbin Hill has no impact on DA. The most penalising issue will be lack of approach lighting...
There are already public criteria, curved approach paths to RWY 14 at Gold Coast. Authorisation Required is a bit of a red herring, it is becoming so common place now that I expect in the near future that requirement will be dropped from the approach. The evolution of RNP will follow the evolution of GNSS approaches. Everyone was very cautious in the beginning, but see as of next year it will be the only way to meet the PBN classification for navigation in Australia.
I think the GC ILS will die a long slow death....domestic airlines don't need/want it, and more internationals will be able to fly RNP soon. Balance that against exposing 85000 homes to 'new' aircraft noise and the politics of aircraft noise will trump the ILS
Alpha