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
Accepted
How can I learn about unpublished VFR reporting points?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, ...
- 30.4k
17
votes
Accepted
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 ...
- 31.1k
13
votes
Accepted
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 ...
- 71.8k
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
Accepted
What is the difference between published and unpublished waypoints?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 ...
- 18.8k
8
votes
Accepted
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.
...
- 18.8k
8
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 ...
- 35.7k
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What is the difference between published and unpublished waypoints?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 ...
- 71.5k
7
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 ...
- 35.7k
7
votes
Accepted
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 ...
- 125k
6
votes
Accepted
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 ...
- 6,095
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.
- 31.1k
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 ...
- 12.8k
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 ...
- 71.8k
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 ...
- 24.1k
3
votes
Accepted
Is it possible to handle naming duplictates for teminal points in ARINC-424?
Based on your example of LGEL, I found 3 VOR approaches in my navigation database with the following points:
Approach
Cx Name
Fx Name
Mx Name
D36LY
CD3LY
FD3LY
MD3LY
D36RW
CD36
FD36
MD36
VORA
CD36
...
- 53.5k
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 ...
- 16.7k
2
votes
Accepted
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 ...
- 18.8k
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 ...
- 879
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 ...
- 100k
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 ...
- 27.5k
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.
- 24.1k
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.
- 12.5k
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 ...
- 1,514
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 ...
- 24.1k
2
votes
Accepted
What are the meanings of the codes depicts in the square brackets? For example: [MDØ68]
According to the INTRODUCTION TO
JEPPESEN
NAVIGATION CHARTS on page 78
14 Jeppesen-derived database identifiers are depicted when different from State-supplied name.
- 1,063
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