The theory was that using NRS waypoints, you could pretty much fly direct from one major area like Los Angeles, to another area, like Chicago in between the pitch and catch waypoints. They derived the pitch and catch using the baseball anology.
wardialer From United States of America, joined Sep 2001, 1178 posts, RR: 0 Reply 8, posted (6 months 3 weeks 5 days 9 hours ago) and read 1873 times:
Why cant they just stick with the more standard waypoint entries like VOR and the 5 character fixes.
This seems to be more complex and requires more input and training.
I can see these in www.skyvector.com
fxra From United States of America, joined Jul 1999, 692 posts, RR: 2 Reply 9, posted (6 months 3 weeks 5 days 8 hours ago) and read 1859 times:
Back in the day when I first started getting into dispatch, the theory relayed to be was the High Altitude Waypoints (HARs) would allow, and mentioned ealier, greater flexibility for both flight planning and dynamic routing for weather or traffic. There's a system to the naming though I can't be bothered to learn it. In practice, "most" of us when building routes around weather tend to use VOR's to work with. It's easier and habit to know where SLN (Salina, KS) is on a map versus KK54C. PIlots also tend to be way more familiar. Controllers, from my experience, still deal with VORs or named Waypoints (like KIRKE for instance). They're more apt to give you a dct to BFF (or often a dme/radial off a VOR) instead of dct to KD72W for weather avoidance. Old habits die hard.
Another issue we run into is Database memory space. ONce you start throwing in all the info for new RNAV SIDs and STARs you start running out of memory quickly (keep in mind I think we're still using Commodore 64 memory discs).
Alias1024 From United States of America, joined Oct 2004, 2683 posts, RR: 2 Reply 11, posted (6 months 3 weeks 5 days 1 hour ago) and read 1747 times:
We've been using these waypoints for a few years at my airline and seem to gradually be using them more and more. Really no different for us, just type in the waypoint the same as we would for any other waypoint and that's where the airplane goes.
It is a mistake to think you can solve any major problems with just potatoes.
113312 From United States of America, joined Apr 2005, 554 posts, RR: 1 Reply 12, posted (6 months 3 weeks 2 days 18 hours ago) and read 1502 times:
These coded waypoints allow a flight route to be defined that is more direct yet off regular airways. By keeping flights, capable of this navigation off of airways that are defined by ground based navaids, capacity for traffic along a general direction can be increased. These waypoints are contained within a database that is loaded into a FMS or INS system. They can be found on contemporary enroute IFR charts. As a general rule, you will find that these waypoints are at the intersection of whole and half units of lattitude and longitude such as N35 00 00/ W97 30 00.