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I've always wondered what GPS degradation (i.e. during tests) would do for things like Required Navigation Performance operations... Having flown into Queensto

by berkut 6y ago

I've always wondered what GPS degradation (i.e. during tests) would do for things like Required Navigation Performance operations... Having flown into Queenstown in NZ several times when it's very cloudy, it's quite impressive how they're able to maintain operations apparently without seeing much, when there are mountains very close and depending on the approach, the aircraft is basically flying down a valley. I don't even think that airport has an ILS system for final approach... https://www.youtube.com/watch?v=Rhkbia1dMcI https://www.youtube.com/watch?v=Rhkbia1dMcI

throw0101a 6y ago
> I don't even think that airport has an ILS system for final approach... NZQN approach plate using VOR/DME: * http://www.aip.net.nz/pdf/NZQN_43.1_43.2.pdf http://www.aip.net.nz/pdf/NZQN_43.1_43.2.pdf * http://www.aip.net.nz/NavWalk.aspx?section=CHARTS&tree=Queenstown http://www.aip.net.nz/NavWalk.aspx?section=CHARTS&tree=Queen... It's a 4.9M PDF that loads at about 13 kB/s over ~4 minutes. Because the valley is curved, ILS cannot be used as a straight-in glide slope is not possible, so you have to 'swing around'.