Questions tagged [aeronautical-charts]

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

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2answers
250 views

How to represent graphically airways and routes?

I need to write a piece of software in order to display on a map flight routes and airways. I would therefore like to know if there is a standard way of displaying this kind of information (in ...
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1answer
416 views

How are aeronautical charts made?

How are aviation charts made? What kind of techniques are used? From what I understand a GA aircraft equipped with: A camera: takes images of the ground Radar: calculates altitude and detects ...
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3answers
2k views

Where can I get airport diagrams of non-towered airports?

I'm trying to find a couple of airport diagrams for right now: X26 and X59. Neither of them are listed in the Chart Supplement or on the FAA site. All I could get were those shabby diagrams presented ...
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1answer
577 views

How does VFR work in countries other than USA? What does hi and lo mean? [closed]

I saw that at https://skyvector.com/ the VFR sectional charts were available for the USA only. Do other countries use the same format for sectional charts? Additionally What does Lo and Hi mean at ...
1
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0answers
108 views

Which countries provide the parameters for their national height reference model in the AIP?

There is a standard in Annex 15 1.2.2.3 "When a geoid model other than the EGM-96 model is used, a description of the model used, including the parameters required for height transformation between ...
6
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1answer
300 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 ...
4
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1answer
499 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 ...
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 ...
7
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1answer
684 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 ...
9
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1answer
297 views

Do FAA sectional charts show all power/transmission lines?

The FAA's sectional aeronautical charts include some power/transmission lines. How complete is this? I am specifically interested in using something like ForeFlight for aeronautical charts while hot ...
6
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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 + ...
3
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1answer
139 views

What criteria do FAA VFR Charts use for High-Intensity Obstruction lights?

FAA’s website provides some symbology explanation (specifically, I’m looking at VFR Charts) and also a database of obstacles, the Digital Obstacle File (DOF). Their PDF provides an explanation of the ...
3
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1answer
93 views

How are aeronautical procedures created in the US?

In creating new procedures for an airport, does someone from the FAA go to an airport, examine all their information, and choose what kind of approach/departure (for example) will be created? Or do ...
3
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1answer
848 views

How is MEF calculated for Canadian VNC?

According to the VNC, the MEF represents the highest feature in each quadrangle. It refers to AIM RAC 5.4 and CAR 602.15(2b) which basically says "lower than 500 AGL (CAR 602.14(2b)) ok, when for ...
5
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1answer
2k 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-...
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1answer
222 views

Why aren't AMA certified radio-control club sites shown on aeronautical charts?

All this drone business wound up affecting us R/C fliers that fly only at local verified club sites. I wrote (told) the FAA that our local AMA R/C flying fields are constantly having "our" flight ...
4
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1answer
254 views

Why are some airfields not on any sectional chart nor listed in the directory?

I would have thought this was a safety issue. Case in point - Hearst Castle Airfield. This is located beneath William Randolph Hearst's Castle in California, located at 35°39'35.54"N 121°11'35.64"...
5
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1answer
736 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 ...
14
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2answers
983 views

How does Jeppesen create its US charts?

The Jeppesen and FAA IFR plates represent the same information in different ways. The FAA publishes its charts for free, but the underlying data that goes into the charts (e.g., exact coordinates of ...
55
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1answer
7k views

What is significant about the number 8069 ft?

On a sectional chart legend, the airport icon with a solid magenta or blue disk is labeled as "Hard surfaced runways 1500 ft to 8069 ft in length". This seems like an extraordinarily arbitrary number ...
7
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1answer
2k 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?
2
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2answers
2k views

Why 360 degrees is in the top instead of 90 degrees in aviation? [closed]

Normally on 2D map, if there is point say A(0,0) in the center and there is point B in the 2nd quadrant . The angle is always in 90<=x<=180. But in aviation, it is 270<=x<=360 . Why ? ...
8
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2answers
3k 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 ...
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?
17
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2answers
974 views

How precisely are airspace borders defined?

I'm studying for the commercial drone certificate. In Tucson, AZ the class C airspace covers about half of the city, but the charts don't list the exact point that it ends. Here's a portion of the VFR ...
14
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1answer
989 views

Why publish an unusable airway?

If an airway is marked unusable, why publish it? Secondary question, can RNAV still be used?
10
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3answers
3k views

What does the T in RVR-T stand for?

In the Chart Supplement (A/FD) for CRQ/KCRQ, you will find RVR-T for runway 24. I was wondering what 'T' stands for?
4
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1answer
338 views

Is there a published airspeed and TPA for Class B approach at San Diego International?

I live in San Diego almost directly underneath the downwind leg of the normal approach (from the north) to Lindbergh Field (KSAN). The Class B airspace for the entire downwind and base leg areas is ...
2
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1answer
3k views

What is a trowal?

I'm trying to learn and understand the symbols on the significant weather charts and I found a symbol for "trowal". But I have no idea what trowal means. Can anybody explain what it is and how it's ...
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0answers
346 views

When is Class Delta Airspace not Class Delta?

Although there could be many examples, I'm using the KLCQ airport in this case. This is how the airspace stands: In the CHART Supplement, it is mentioned that it's a "Class D svc other times class E"....
13
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1answer
1k 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 ...
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2answers
474 views

What course should be taken to make estimated calculations?

(skyvector.com) When I want to calculate the leg time from GIJ to CRL going along the airway J554, at say FL190, I know that I have to calculate the ground speed first, but in order to do that, ...
5
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1answer
356 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 ...
4
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1answer
2k 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: ...
6
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2answers
5k 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 ...
5
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2answers
751 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?
1
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1answer
1k views

Where can I find airspace maps for Turkey?

I am trying to learn more about airspaces. It would be nice if I had the airspace map of my region to look and observe. skyvector.com shows very few information about Turkey, not useful.
13
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3answers
1k views

Why is the clearance delivery frequency included on an approach plate?

Approach plates include frequencies in the order that pilots will require them, reading from left to right. The example below from McClellan-Palomar’s ILS or localizer/DME approach to runway 24 is a ...
8
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2answers
7k 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 ...
11
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3answers
16k views

How do you know if a VOR is High, Low, or Terminal?

Is there any way of telling on both a VFR and IFR chart what type of VOR we are looking at?
7
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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
3
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2answers
557 views

What are the differences between these IFR Low Altitude Chart Navaid Symbols?

Below are three NAVAID chart symbols. There is almost no explanation on the aeronautical chart user's guide. It even says that a navaid with an FSS will be shaded but the third box has an FSS and it ...
4
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3answers
1k views

On an IFR Low Altitude Chart what does this symbol mean?

I read the information below in the aeronautical chart user's guide. I have several questions. On the third line - Why is there an ICAO identifier for a U.S. & Alaska low altitude chart? I ...
3
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1answer
1k views

What is radar minima?

I was studying the Aeronautical Chart User's Guide and I came across the term 'radar minima' several times under the graphics depicting charted airports. Blue – Airports with an Instrument Approach ...
4
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2answers
2k views

Where can a PDF of the TPP legend and supplemental materials be found?

When you buy a book of government approach plates, or a Terminal Procedures Publication (TPP) it comes with a legend and other supplemental documents along with it. Now that a lot of pilots are using ...
4
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1answer
520 views

(See Included ILS Chart) What to Do After SMT RDL 084?

Below is a screen grab from the ILS RWY 25R approach chart for HKG/VHHH. What should the plane do after passing SMT radial 084 (or TD D8 NM)? It doesn't look like immediately turn heading 253 degrees;...
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2answers
3k 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?
1
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1answer
480 views

What is the meaning of segment in MTRs?

Military Training Routes (MTRs) with no segment above 1,500' AGL shall be identified by four number characters (IR1206/VR1207) MTRs that include one or more segments above 1,500' AGL shall be ...
10
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2answers
983 views

What is this racetrack-shaped Special Use Airspace, and why isn’t it on the VFR sectional?

What type of SUA is AR633A, the cyan racetrack-shaped SUA north of Knoxville, Tenneessee (KTYS) depicted below on sua.faa.gov? Why doesn’t it correspond to anything on the VFR sectional?
13
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4answers
5k views

What is the thick, dashed, magenta line on a sectional chart?

In the attached area of the sectional chart we see restricted areas R-2101 and R-2102. Also covering that general area is a circular, thick, dashed magenta line. There's a notice there that I assume ...