Questions tagged [aeronautical-charts]

For questions relating to navigation charts, but not performance charts.

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8
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3answers
10k views

How should I operate within the dashed magenta lines next to Class D airspace?

I am unsure of how to operate within this area (red dashed line) without connection to ATC. It appears to come off of class D airspace. Can anyone provide an explanation of what this area is and how ...
8
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1answer
759 views

Why are there some airports not charted as service-available when FBO provides fuel?

On FAA's Aeronautical Chart User's Guide - VFR Charts. It says the tick-mark charted airports provide fuel service. However, at Airport KSIY and 1O5, There are FBOs at both airports. e.g at ...
8
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1answer
8k views

Why are airspaces depicted in AGL?

Generally we fly under the rule of QNH which means our IA is above mean sea level. And as we all know airpace limits are charted in MSL. Then, why the definitions of airspaces are they (class C, D and ...
8
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1answer
9k views

What does the "D" symbol mean on this instrument approach chart?

What does the "D" symbol mean on this approach plate in the airport diagram section (bottom left of plate)?
8
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2answers
4k views

What is 20NM reference point in "CTC SOCAL WITHIN 20NM"?

In Los Angeles TAC you'll see magenta boxes with SOCAL frequency and other information. I was just wondering what is 20NM reference point is? in other word, 20NM from where or what?
8
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1answer
692 views

What activities take place in the warning areas offshore of Washington, D.C.?

Looking at the Washington sectional, several areas offshore are designated "Warning" areas: W-386, W-107, W-105 etc. The only notes given are "National Defense Operating Areas. Operations hazardous to ...
8
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2answers
160 views

On old sectional charts, what was the purpose of the domestic ADIZ regions and what was the difference between a "Defense Area" and an "Open Area"?

Looking at an old US sectional chart from 1956, I noticed a few oddities around where Air Defense Identification Zones (ADIZs) were placed. Compared to modern airspace where the US ADIZ is strictly ...
8
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1answer
354 views

Where is this VFR reporting point ("Water Tank" near Thousand Oaks, CA) in real life?

I was looking at the VFR sectional near Thousand Oaks, California. The chart has a "WATER TANK" labeled, but I see many water tanks in Thousand Oaks on the Google Maps satellite view. Does anyone ...
8
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2answers
4k views

How are you supposed to get the East/West variation on this question in the FAA PPL written exam?

While taking a practice test, I needed to calculate the magnetic heading between two airports. Most of the time I run into a problem, the map will provide me with isogonic lines with the East/West ...
8
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1answer
209 views

Which timezone do airspaces that cross a time zone boundary belong to on a VFR sectional?

The Albuquerque VFR sectional claims that the airspace table in the margin use local time, but some of the airspaces in the table cross timezone boundaries. Which timezone do those airspaces belong ...
8
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1answer
200 views

Can you change airways when they cross without a named fix?

There are a few victor airways that cross without a named fix, just two solid lines drawn over each other on the IFR low charts. Can these be used as intersections for changing airways in IFR route ...
8
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1answer
470 views

Is it ok to use an iPad (or similar consumer hardware) and electronic charts for GA in Europe?

I'm wondering if it is it ok to use a consumer tablet and electronic charts (e.g. within the AirNav Pro app) instead of the paper version for recreational VFR single-piston flights? Edit: to clarify,...
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3answers
1k views

What do these polygons mean on VFR charts?

There are a lot of blue polygons on this VFR chart: What do they mean? Source
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4answers
1k views

Why can't I exactly match the same points on different VFR sectional charts?

I am taking a trip from somewhere on the Phoenix sectional up to the grand canyon. I wanted to just splice the two sectionals together on my computer and then print them out. I picked a coordinate ...
7
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1answer
386 views

What are the different types of take-off minima at the bottom of a Jeppesen airport diagram?

Anyone that could explain the bottom plate, what’s the difference between all those minima?
7
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1answer
388 views

Where can I find the active time of a MOA on the VFR chart?

I am trying to find out the time when the HILLTOP MOA is active and its elevation. Where is this information located in a VFR chart?
7
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2answers
4k views

Is there a 3-dimensional airspace viewer?

I am using SkyVector to have an idea of what the airspace looks like in terms of waypoints and airways. I was wandering if anybody knows a website that displays such information but in 3D (or 3D + ...
7
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1answer
3k views

VORTAC symbol over KMOT airport - is the small dot the center?

I am looking at KMOT and I see a little dot over the airport symbol, is that the center of the VORTAC?
7
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2answers
7k 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 ...
7
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2answers
603 views

Where can I get IFR charts for throughout the world?

(Note this question asks about VFR charts.) In the U.S, I can get IFR navigation charts from Aeronav or Jeppesen. Do IFR charts exist worldwide? If so, where can I go for charts of other countries? (...
7
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2answers
693 views

How do you encode a radial to radial turn in ARINC-424?

I am building my own ATC simulator and for that purpose I need to include several instrument procedures. I have a problem with that particular one: My problem is on KEA transition, the leg between "...
7
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2answers
2k views

How do I know if I'm able to use LPV minimums on a GPS approach?

Many GPS approaches have lower descent minimums labeled LPV. How do I know if my aircraft is equipped to allow me to fly to those LPV minimums? And while we're at it, it would be good to know which ...
7
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1answer
200 views

Where can you find symbols (like these) that aren't on the legend?

I see a lot of these fan like symbols: ...on the Nav Canada Alaska Highway - Fort Nelson to Northway, 1:500,000 VFR Navigation Chart, but they're not anywhere on the map legend. I presume they'...
7
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1answer
595 views

What does the runway distance mean under "Additional Runway Information" on Jeppesen plates?

See my previous question What are Runway Declared Distances? On Jeppesen 10-9 or 10-9A charts, there is a section dealing with Additional Runway Information. Does these distances correspond to the ...
7
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1answer
762 views

What is a transmit-only frequency?

I found the above in the Jeppesen Airport Chart Legend. What would be an example of a transmit-only frequency? Is it related to Flight Service Stations? If so, how? Where can I find an example for ...
7
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2answers
192 views

When to start descent entering a racetrack under NORDO?

Scenario: I am flying in IMC, and communications fail completely. IMC persists up until destination, where I will be conducting the following instrument approach: I am flying direct to ZUNAD from the ...
7
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1answer
142 views

Where can I find the information from the back of a TAC if I don't have a physical copy?

The Atlanta TAC has a note that says "See back of this chart for procedural information within the Atlanta Class B Airspace": If I don't have a physical copy of the TAC - because I'm using a flight ...
6
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1answer
408 views

Why isn't the course fixed along an airway?

Why does in some cases magnetic course (not magnetic variation) change between navaids along a same airway? Isn't it supposed that a straight line in an aeronautical chart representing an airway has ...
6
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3answers
2k views

How to fly to an uncharted airport?

I'm learning X-Plane 11 and started to use an add-on called FS Economy. One of its missions is to fly to small airports that I can't find on skyvector, so I'm unable to plan a direct flight. I ...
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2answers
668 views

Is there a list of all airways?

Is there a public and current (AIRAC-cycle 1509) list of all worldwide victor- and jetairways (including the pertaining intersections)? I'm not searching for a graphical map of the airways, but more ...
6
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1answer
4k views

Why are there GPS MOCAs?

The Pilot Controller Glossary (and other places) define MOCAs as: MINIMUM OBSTRUCTION CLEARANCE ALTITUDE (MOCA)− The lowest published altitude in effect between radio fixes on VOR airways, off-...
6
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1answer
880 views

What benefit is provided by an MCA that is not already provided by an MEA?

I continue to read definitions of MEA as the minimum altitude across the entire segment to ensure obstacle clearance and navigation/comm signal reception. It also states that this is the lowest ...
6
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1answer
8k views

What is the difference between VFR Flyways, Corridors and Transition Routes?

What is the difference between: VFR Flyways VFR Corridors VFR Transition Routes I can find a Flyway chart on the reverse side of the TAC chart and also Transition Routes in the TAC chart. But where ...
6
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1answer
2k views

What's the standard print size for a sectional chart?

I'm checking out the Dallas sectional in digital form for my own amusement. The image, in TIFF format, is massive. I wonder, if you buy one of these in printed form from the FAA (or your local GA ...
6
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1answer
360 views

Why are so few heliports depicted on sectionals?

Pretty much every aerodrome, from an international airport to a private grass strip is depicted on a sectional chart. But there are few or no heliports shown. Why is this? Do helicopters have a ...
5
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1answer
547 views

Does the large 6-pointed star on a sectional warn of dangerous radar facility?

I cannot find an explanation for this symbol on the chart legend. Example: near BAB, Beale AFB, on the San Francisco Sectional Chart, does it warn of the dangerous radar facility? Source: skyvector....
5
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3answers
7k views

What is the role of an intermediate fix?

There are the IAF and the FAF, which has clear roles. One is where you start the approach and the other where you start to descent and end the approach. But what is the purpose of an Intermediate fix?
5
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2answers
195 views

How to use airport panel information on sectional chart?

In the Chart Supplement, the airport information includes the chart on which the airport is located. It also includes a panel on the chart where the airport is located. How can I use this panel ...
5
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3answers
5k views

Is there a difference between a chart and map?

Does the use or meaning of "chart" or "map" vary worldwide? Is there a difference between a chart and map?
5
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1answer
1k views

Why is it assumed on sectionals that the area outside of a 700 AGL Class E (Echo) transition area is Class E starting at 1,200 AGL?

In this Bold Method article (http://www.boldmethod.com/learn-to-fly/airspace/class-g-airspace/) it is stated that anything beyond the hard lines of this examples 1,200 ft AGL Class E (blue) transition ...
5
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1answer
192 views

Why is there no airport beacon light symbol on the sectional for KSAC, although it does have one?

The star symbol on the top of the airport means airport beacon light but Sacramento Executive (KSAC) has no star symbol but they do have a beacon light and controlled airport as well. Is that ...
5
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1answer
282 views

Why do IFR charts show TACAN paired frequencies when there is no collocated VOR?

The image below shows a low IFR chart with a VORTAC on the right and a TACAN on the left. I understand the VORTAC is labelled with both VOR frequency and TACAN channel so that a civilian user could ...
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2answers
231 views

At what minimum height above terrain does a vertical structure need to be indicated on a sectional map?

I recently drove by what seemed like an unusually tall structure and used Google Maps satellite view, its distance measurement tool, and basic trigonometry to calculate that this building (some kind ...
5
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1answer
3k views

Does Jeppesen display runway declared distances on their charts?

I noticed that Jeppesen includes additional runway information on their 10-9 or 10-9A charts. Are these listed values consistent with FAA runway declared distances?
5
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2answers
972 views

What does dashed blue lines overlay with thick faded blue lines mean in an aeronautical-chart?

By looking at the dashed blue lines overlay with thick faded blue lines, can we say these are Class D airspace and Class E airspace above 1200' AGL?
5
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1answer
3k views

What are the VOR channels used for?

I'm looking at different VORs on a sectional chart and I see the frequencies but I also see a channel number associated with them as well. What are these channel numbers and how do you use them?
5
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1answer
438 views

What does a numbered dot mean on a sectional chart?

What does this point (125) mean on a Sectional Chart? Is it the field elevation, or just the highest elevation on the area?
5
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1answer
488 views

Why did the MSA for Taipei (RTCP) change?

I got a question about the Minimum Sector Altitude (MSA) on Jeppesen arrival plate (RCTP 20-2). The MSA circle was divided into three sectors with three altitude before (2008, top image), but I found ...
5
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1answer
3k views

What is the gray zigzag line over V154 between Dublin VORTAC and LOTTS intersection?

Above Victor airway 154 on the IFR enroute low altitude chart, there is a grey zigzag line between Dublin VORTAC and LOTTS intersection. What does the gray zigzag over the segment indicate? Credit: ...
5
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1answer
441 views

Do Jeppesen SIDs have top altitude?

FAA SID charts show the top altitude, the maximum altitude you can climb to when cleared for the SID. Do Jeppesen SID charts also show the top altitude? I checked some of them but couldn't find it. If ...