Really? I'm about 99% sure now that the diagram I posted above is an accurate map of the PANS-OPS surfaces for the Adelaide CBD.monotonehell wrote:Confusion is understandable. There seems to be a lot of contradicting evidence, and a near stonewall from the authorities who do the approving. This is why we made the investigation and submission back in 2008.
That diagram looks more like the OLS map for Adelaide Airport. Although there's some extra frilly bits I've not seen before. It could be a creation from other data by the developer because they "needed something in the document".
The only time we've seen a diagram of the PANS-OPS surface is where it's, again, been required by some bureaucracy and the designers of the document have created one. Even though the regulations require such a map to be made available to the public.
After extensive requests by Wayno back in 2008 we came to the conclusion that no such map was available, other than the rough one in Adelaide Airport's development plan. (Which is reproduced in the S-A submission.)
The weird thing is that the regulations also state that penetrating the PANS-OPS ceiling is prohibited, and yet we have several applications which do so and have been approved.
It can't be the OLS map, as that diagram is fairly easily available online and is less complex in shape. This is (part of) it: As you are aware, PANS-OPS is typically higher than OLS, and that's the case with the values between these two diagrams. For reference, the 123 Flinders Street site lies between the 130 and 140m AHD OLS contours, and between the 240 and 250m AHD contour lines for the PANS-OPS map. A snippet of the same PANS-OPS map is also visible in the Aeronautical Impact Assessment document Ben posted, which cites PANS-OPS values on the 1-8 North Terrace site, which are again consistent with that map.
What developments are you talking about have been approved that penetrate PANS-OPS? The only thing I can think of is 1-8 North Terrace, but that only temporarily penetrates PANS-OPS due to the height of the construction cranes, which as far as I'm aware is permissible so long as approval by the relevant powers-that-be is given.