21 votes

What do aviation agencies do to make waypoints sequences more easy to remember to prevent navigation mistakes?

Australia Brisbane / Melbourne FIRs boundary PUDYA SWEED LIPPS ALIDL CLOZA TOUDA PHONE (Put your sweet lips a little closer to the phone, Jim Reeves) Brisbane ...
19 votes
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How can I learn about unpublished VFR reporting points?

Wait until the frequency isn't terribly busy on one of your flights, then just: "Unfamiliar with Creek waypoint, Request clarification" You can reasonably expect them to either explain the waypoint, ...
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17 votes
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What is the difference between a fix, a waypoint and an intersection?

No, they are not interchangeable and indeed, have well defined meanings. A fix is an arbitrary point in space used to establish current position calculated by referring to external references. You ...
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13 votes
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Why are some seemingly major waypoints nowhere to be found on sectionals (including enroutes)?

The CAVLR3 is an example of an RNAV procedure. A requirement to fly an RNAV procedure is for the aircraft to have navigation equipment capable of finding all of those points. There are many thousands ...
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13 votes

What do aviation agencies do to make waypoints sequences more easy to remember to prevent navigation mistakes?

I thought this was pretty creative. "Follow the yellow brick road" found on GPS 1R approach into Wichita, Kansas.
12 votes
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What is the difference between published and unpublished waypoints?

Published waypoints are waypoints that appear on the charts and in the published navigation databases used by GPS navigators or FMSes. They are referenced using the published identifier for the ...
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11 votes
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Are there ground stations at the waypoints a pilot may fly to?

Ground based radio navigation (VOR, VORTAC, LORAN, NDB) by necessity have ground stations to handle generation, amplification and broadcasting the signals used for navigation. Here is an example of ...
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10 votes
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What is the difference between Fly-By and Short-Turn?

The context of your question is a bit unclear, but assuming that you're asking about navigation waypoints in the US then you're probably referring to these terms as defined in the FAA's Pilot/...
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8 votes
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When passing a waypoint, when exactly are we on the next leg?

The transition point as defined in RTCA DO-283 RNP MOPS is the point where the aircraft's path passes through a vertical plane that bisects the inbound and outbound legs going through the waypoint. ...
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7 votes

What is the difference between published and unpublished waypoints?

You didn't mention if you're asking about a specific country or jurisdiction (although your question seems to be based on European information), but here's some information about the US situation. A ...
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7 votes
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Why do RNAV airways exist?

RNAV freed aircraft from the airways that were already in place that may have zig zagged from VOR to VOR, but with the limitations of the ATC system based on human controllers, it is still desirable ...
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6 votes

Why are waypoints not named uniquely?

ICAO does actually recommend that names for significant points are unique: 3.4 The unique five-letter pronounceable name-code designator assigned to a significant point shall not be assigned ...
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6 votes
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What is the difference between fixes and waypoints on an arrival plate?

As described in the answer to the previous question, all of the points on the chart are both waypoints and fixes. The difference between the printed icons is how they are identified from the air. The ...
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6 votes

What is the origin of the waypoint CLAWW and PAHTI(New England region)?

Read it as "wicked party" and Boston is famous for sea food, including crab claws. Chowder, lobster and claws.
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6 votes

How did the waypoint ULURU get its name?

The ICAO rules for waypoint names are very loose. They have to be five characters long, they can't be close to another waypoint with the same name (where the definition of "close" can vary ...
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4 votes

How does one differentiate a "fly by" from a "fly over" waypoint?

A flyover waypoint will have a circle drawn around it on a chart, whereas a fly-by waypoint will not. (Easy to remember: the circle looks like the O in Over) The symbols for a fly-by and a flyover ...
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3 votes

How do flight procedure designers decide when to assign an altitude constraint to a waypoint?

Altitude limits on these procedures have to take many different things into account, including obstacle clearance and communication, but also radar coverage, separation from other procedures and ...
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3 votes

How can I learn about unpublished VFR reporting points?

If you don't already have one, get a SLC Terminal Area Chart. Sometimes they will depict VFR reporting points that the Sectionals will not. Also, airports themselves will publish local area course ...
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  • 16.4k
2 votes

What is the difference between fixes and waypoints on an arrival plate?

According to the Pilot/Controller Glossary: WAYPOINT− A predetermined geographical position used for route/instrument approach definition, progress reports, published VFR routes, visual ...
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  • 16.4k
2 votes

Why do RNAV airways exist?

You are partially correct, first of all they are called "RNAV routes" not "RNAV airways" and yes the entire point of RNAV was not needing to fly along a suboptimal preset path but that was because of ...
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2 votes

North Atlantic Tracks entry and exit points

You can find the routes them selves here, the start and end points are noted like other airway intersections by phonetic names. You can look up the names here (use world hi maps to see them) for exact ...
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  • 96.3k
2 votes

What are the ICAO GNSS waypoint naming conventions?

There are no "GNSS waypoints". GNSS is a common position source for RNAV, though not the only one. All RNAV waypoints, like conventional (e.g. VOR/DME) fixes, have an identifier composed of five ...
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2 votes

Why are waypoints not named uniquely?

Waypoints do not have to have unique names as long as they are separated by enough distance so that confusion over names would be highly unlikely.
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  • 11.4k
2 votes

Why do RNAV airways exist?

RNAV airways are there for several reasons: (Speaking as a US controller and instructor) Radar performance. Radar is not everywhere, and neither is ADS-B. Regulations require GNSS aircraft to be ...
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2 votes
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What name is given to an abeam waypoint in the FMS?

From the Thales Pilot Guide: If ABEAM PTS are desired: ABEAM PTS [3R] .......... Confirm/Press If Option 1 is defaulted, ABEAM PTS is displayed yellow, if not press [3R]. ND shows direct ...
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2 votes

How do I distinguish 2 fixes with the same name?

The answer is embedded within the question: The pilot is able to distinguish between the two fixes because they are in different regions.
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2 votes

How to calculate time-of-arrival of airplanes to a neighborhood of a position (with minimum probing)?

I don't think there's any "easy" way to do this, but your best bet is probably to create a data table of flights linking city pairs served by scheduled commercial carriers that may cross ...
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