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You're also never supposed to rely on GPS while flying (AFAIK). Has that changed?
by mentat 15y ago
You're also never supposed to rely on GPS while flying (AFAIK). Has that changed?
- madaxe 15y agoWhat he means is that plenty of small airstrips have no ILS (http://en.wikipedia.org/wiki/Instrument_landing_system http://en.wikipedia.org/wiki/Instrument_landing_system) and just publish GPS glideslopes... and if you're landing in zero visibility and you lose GPS tracking, landing is going to be dangerously hard.
- dedward 15y agoRight - but GPS is never supposed to be relied upon for anything - it's secondary. If there's no ILS and zero visibility - you should be landing somewhere else, no?
- zcid 15y agohttp://en.wikipedia.org/wiki/Localizer_Performance_with_Vertical_guidance http://en.wikipedia.org/wiki/Localizer_Performance_with_Vert... GPS is also replacing ground-based radar for traffic control in the US. It's a good idea to have alternatives in your cockpit, but 99% of the time GPS is the easiest and most accurate option.