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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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3 votes
1 answer
5k views

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

I am referring more to Terminal Area Procedures (SID, STAR, Approach), rather than en route waypoints, airways etc. How do I know if such a waypoint is a "fly over" or not? Especially for ...
1 vote
1 answer
92 views

Why is there a FAF database identifier with the code [FS044] even though it says no FAF and why is there an RNAV fix symbol for that point?

Why is there a FAF database identifier with the code [FS044] even though it says no FAF and why is there an RNAV fix symbol for that point? The code [FS044] means FAF for the approach (What is the ...
0 votes
0 answers
90 views

What is the difference between RNAV-Terminal usage waypoints vs RNAV-STAR waypoints?

What is the difference between [MM604 (or) MM615] vs [RADAB (or) DAMAD] in the STAR attached below When seen using Enroute Chart The description for RADAB or DAMAD is: The description for MM604 or ...
0 votes
0 answers
111 views

FAA and Eurocontrol waypoints with same ID

It seems that the FAA and Eurocontrol have waypoints with the same ID. For example, the route between KJFK and LFPG for a recent ...
2 votes
1 answer
239 views

What are the meanings of the codes depicts in the square brackets? For example: [MDØ68]

I always see these codes inside of the square brackets with different charts. Especially I wonder about the meaning of Ø.
1 vote
1 answer
147 views

Is it possible to handle naming duplictates for teminal points in ARINC-424?

In ARINC-424 17 specification, under 7.2.6 Terminal Waypoints subsection A the "Airport/Heliport or Runway/Helipad related Terminal Waypoints" naming ...
3 votes
1 answer
2k views

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 ...
-2 votes
2 answers
112 views

Service to maintain database of airports, runways, helipads, navaid and fixes

I had asked previously for a list of all the data I mention but now would like to be able to maintain this list. I know this is not a site for software developers but does anyone know of a site that ...
0 votes
1 answer
155 views

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

Suppose we have a position on earth with coordinates: (latitude, longitude). I'm looking for methods, algorithms or APIs to get a time alert that a plane would fly ...
2 votes
2 answers
191 views

How did the waypoint ULURU get its name?

Can anyone explain how the waypoint ULURU near Sandspit, BC Latitude 53° 6' 1.00" N Longitude 131° 38' 13.00" W was named, when Uluru is a very large monolith in Australia also known as ...
5 votes
2 answers
650 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) ...
5 votes
3 answers
875 views

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 ...
22 votes
3 answers
32k views

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?
8 votes
1 answer
1k views

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 ...
8 votes
2 answers
11k views

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 ...
11 votes
2 answers
1k views

How can I learn about unpublished VFR reporting points?

I often hear "The Creek" used by pilot and ATC in the vicinity of Provo Municipal airport. I've been flying in this area for over 20 years, and I don't know what they are talking about. There are at ...
3 votes
4 answers
2k views

What kind of waypoints/routes are used to prepare a flight plan in practice?

I have noticed that FAA provides data delivery service where both waypoints and ATS routes are available to download. By looking at the files, I realize that there are a variety of waypoints and ...
2 votes
1 answer
733 views

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 ...
2 votes
1 answer
145 views

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....
0 votes
1 answer
231 views

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) ...
3 votes
2 answers
485 views

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 ...
2 votes
1 answer
772 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.
1 vote
1 answer
673 views

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 ...
7 votes
1 answer
972 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 ...
1 vote
1 answer
589 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?
13 votes
1 answer
2k views

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 ...
11 votes
2 answers
2k views

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 ...
20 votes
2 answers
3k views

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 ...
4 votes
1 answer
248 views

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 ...
5 votes
1 answer
309 views

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 ...
4 votes
1 answer
861 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?