spacecadet wrote:The FAA
spacecadet wrote:To actually answer your question, IFR and GPS waypoints and fixes are used for IFR flight plans. VFR waypoints cannot be used on an IFR flight plan, and IFR waypoints/fixes cannot be used on a VFR flight plan (unless you can see it - theoretically you can look out the window and spot a VOR).
Basically, go to SkyVector and look at the different charts. They are used for different purposes. "World Hi" and "World Lo" are the two IFR charts and are what's used to determine IFR routings above or below 18,000 feet. The "World VFR" and TAC charts are used to determine VFR routings.
Typically IFR routes are planned along airways, with entry and exit points on those airways determined by departure procedures and standard terminal arrivals. VFR routes *can* be routed along official VFR flyways, but they can really be routed any old way you want, as long as you can see all the waypoints.
The FAA has "preferred" routes for many different major city pairs. You can look up a particular route or download the entire database from the FAA's site here: https://www.fly.faa.gov/rmt/nfdc_prefer ... tabase.jsp
That doesn't mean a dispatcher or pilot can't file a different route, but he may end up actually *getting* the preferred route whether he wants it or not. The FAA will let you go off their preferred route only if there's no conflict and workload permits.
All of this is true whether or not you're using some automatically generated flight plan.
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