[Originally sent to [EMAIL PROTECTED] by mistake.] Curtis L. Olson writes:
> With these changes, the GS will bring you in precisely to the > touchdown point as defined in the default.ils.gz file (it wouldn't > before.) The only issue that remains is that it will bring you in > to the elevation defined in the ILS database, which doesn't > necessarily match the DEM/SRTM terrain at that point. Still on > average, this will be a big improvement until we can do a better > job of getting the runway end elevations nailed correctly. For the record, a CAT I ILS approach will bring you down to a decision height of 200 ft AGL. If you cannot see the runway or approach lights well enough to transition to visual at that point, you have to start a missed approach. CAT II and III ILS approaches can bring you closer, but they require extra equipment on board the plane and special crew training. Many instrument-rated private pilots would never consider flying an approach with a 200 ft ceiling, even though it's legal. The recommendation I've read is to start with a personal minimum of a 1000 ft ceiling, then work your way lower over the next few years to, maybe, 400 feet. Under those conditions, you'd be able to switch to visual a couple of miles back from the field. All the best, David -- David Megginson, [EMAIL PROTECTED], http://www.megginson.com/ _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
