You can interpret that question a lot of different ways.
For example ultralights are pretty much "You're small and light enough not to cause much damage when you crash; don't do anything stupid". So yes, I am quite sure there are heavier-than-air flying machines carrying humans and a GPS unit as their sole navigational tool. As if you need advanced tools for what a ultralight can actually handle in practice, LOL.
On the other hand if you go to the E-CFR and look at FAA reg 91.205 if you want to climb above/thru FL240 you need a working DME or RNAV kinda implies any commercial operation must have VOR-type gear installed.
Note that the same playback hack that works really well on GPS works even better and easier on old fashioned VOR gear.
Merely being required to have operational gear doesn't mean a little angel is perched on each pilot's shoulder making sure they actually do have the gear, and they know how to use it, and they are actually using it.
For example ultralights are pretty much "You're small and light enough not to cause much damage when you crash; don't do anything stupid". So yes, I am quite sure there are heavier-than-air flying machines carrying humans and a GPS unit as their sole navigational tool. As if you need advanced tools for what a ultralight can actually handle in practice, LOL.
On the other hand if you go to the E-CFR and look at FAA reg 91.205 if you want to climb above/thru FL240 you need a working DME or RNAV kinda implies any commercial operation must have VOR-type gear installed.
Note that the same playback hack that works really well on GPS works even better and easier on old fashioned VOR gear.
Merely being required to have operational gear doesn't mean a little angel is perched on each pilot's shoulder making sure they actually do have the gear, and they know how to use it, and they are actually using it.