Questions tagged [waypoint]

A named point of airspace used in navigation, they have a defined location based on either coordinates or bearing.

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What are the ICAO GNSS waypoint naming conventions?

I'm curious about ICAO naming conventions regarding GNSS and RNAV waypoints. Would I be correct in assuming that all GNSS area waypoints are 5 letters, and RNAV waypoints are 6? What about waypoints ...
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How do flight procedure designers decide when to assign an altitude constraint to a waypoint?

I am studying procedure design manuals (TERPS, PBN 8260.58A manual, ICAO PANS-OPS 8168 manual etc.) and I haven't found any guidelines concerning altitude constraints that can be imposed on a waypoint....
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How do I distinguish 2 fixes with the same name? [duplicate]

I see two fixes in the CIFP file that have the same name PERSN. Given 2 fixes that have the same name but are located in different regions (defined by ICAO code) ...
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Why are waypoints not named uniquely?

Waypoint names are not unique. Why ? This is unnecessary (it would be possible to use unique names only). It introduces potential for confusion. So why are duplicate waypoint names permissible and ...
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Why do RNAV airways exist?

I assume there's some stupidly obvious reason that I'm missing, but why bother creating RNAV airways when I thought the entire point of RNAV was not needing to fly along a suboptimal preset path? I ...
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1answer
236 views

North Atlantic Tracks entry and exit points

Are the actual locations of the North Atlantic Tracks entry and exit points published anywhere? I'm looking for definition (latitude, longitude) of the entry and exit points for North Atlantic Tracks.
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What is the distance between 2 adjacent waypoints? [closed]

I am working on an en route air traffic control system. For the application I plan on allowing the user to plot the position of a few waypoints on a square region which is 100 miles in length and ...
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1answer
343 views

Are sequenced waypoints still displayed on the Navigation Display / FMS legs page?

This question relates to the Flight Management System of a large airliner, e.g. Boeing 787: During a flight, when the aircraft passes a waypoint, is this just passed waypoint (and the previous ones) ...
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1answer
404 views

When passing a waypoint, when exactly are we on the next leg?

When performing one of the procedures shown in the pictures below, when exactly do we consider ourselves to be on the next leg? For example: for the fly-by waypoint, when do we consider that we are ...
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1answer
285 views

What name is given to an abeam waypoint in the FMS?

In a Flight Management System, what name is given to an abeam waypoint in case of DIR TO? Is this name format different in Thales and Honeywell FMS?
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What is the difference between published and unpublished waypoints?

While reading some articles about free route airspaces I found reference to two types of waypoints: Free route airspace (FRA) is a specified airspace within which users can freely plan a route ...
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Why are some seemingly major waypoints nowhere to be found on sectionals (including enroutes)?

I'm looking at the BNTLY.CAVLR3 arrival at KIAD: Almost none of the waypoints (BNTLY, CAVLR, COINZ, etc.) are on a single sectional or chart, enroute or otherwise. Considering this is such a major ...
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What do aviation agencies do to make waypoints sequences more easy to remember to prevent navigation mistakes? [closed]

Inspired by this question. What examples are there of waypoints strung together on airways or approaches which are funny or tell a story in order to help controllers and pilots reduce navigation ...
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What is the origin of the waypoint CLAWW and PAHTI(New England region)?

I'm the reading the book "Sayfaring". There are two waypoints I don't get the origins in the sentences. 1) CLAWW "Boston has lifted a particularly intricate constellation of itself into the ether ...
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What is the origin of the waypoint WORUM (neayby Houston)?

I'm reading the book "Skyfaring". There is a sentence "TQELA, WORUM, CRVZA (beer), CARNE (meat), QUESO (cheese) for the city’s cross-border culinary traditions" What is the origin of WORUM? Is it ...
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What are those 5-character alphanumeric waypoints?

On the following High IFR chart from skyvector.com I notice along the meridian at 30' intervals there is a green symbol the same shape as an RNAV waypoint. Next to them are 5-digit identifiers, but it ...
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What is the difference between fixes and waypoints on an arrival plate?

This is a followup to my other question on this topic. Figured I'd just make it a whole separate question. The plates below show STAR arrivals to KMEM. The points along the route are marked with two ...
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What is the difference between a fix, a waypoint and an intersection?

It seems these terms are used interchangeably. Are they the same thing? Do they all refer to the points in space that are given 5-letter names?
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507 views

Are there ground stations at the waypoints a pilot may fly to?

How is a waypoint marked? Is there a ground station present at that waypoint? And how are these waypoints named?
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What is the difference between Fly-By and Short-Turn?

By all definitions that my team and I have found, fly-by and short-turn (with respect to military unmanned air vehicle waypoint based flight) mean the same thing. Briefly, this allows the pilot to ...