Hi Almost all the turnpoint data contained in the various files on the WorldWide Turnpoint Exchange (http://acro.harvard.edu/SOARING/JL/TP/AU.html) does not have elevation data. When you have something like a Cambridge 302/303 in your cockpit, it's nice to be able to work out final glide and available height at your target if your waypoint database supports it (rather than having everything in the database located at sea level !).
I have sifted through the 1400+ co-ordinates from Geelong Gliding Club's contribution and added elevations to those airfields that appear in ERSA, but I would like to make it as complete as possible with accurate data from other sources. So let me ask some questions which I hope the combined genius on this list can answer (a) with the airfields listed, are the co-ordinates in these databases from ERSA or from some other source/feature (some say terminal building, for instance, but many have no specific details) ? As an aside, what marker point does ERSA use ? Not being a power pilot with an ERSA to hand, I don't know. (b) how were the airfield elevations not in ERSA obtained ? I am assuming a drop-in visit with a handheld GPS. (c) does anyone else have elevation data for these turnpoints that could be used for any of these points to fill in the gaps ? I know, you're not going to land on a silo or railway siding, but it would be nice to know what height you were AGL at those points, especially where the ground height and local air pressure varies from that at your home airfield. I am specifically interested in the NSW data as that's where most of my XC flying is likely to take place. Cheers Jason Armistead _______________________________________________ Aus-soaring mailing list [EMAIL PROTECTED] http://lists.internode.on.net/mailman/listinfo/aus-soaring
