Questions tagged [aeronautical-charts]

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

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7
votes
2answers
369 views

What is the primary reason that the non-towered airports KACV and KTLV have E4 extensions to E2 airspace?

NOTE-- this question is not about why it was desired to protect the airspace that ended up within the E4 "extensions". Rather, this question is about why that was done by designating that airspace as ...
11
votes
4answers
24k views

How do I determine the VFR pattern altitude at an airport?

How do I determine the VFR pattern altitude at an airport? Can I find it on a sectional?
11
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1answer
12k views

What are Runway Declared Distances?

Perusing through the A/FD in the United States I see that some runways have declared distances while others do not. What is the meaning of: TODA TORA ASDA LDA
13
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2answers
2k views

Is there an online source for European Instrument Approach Procedures?

The FAA offers instrument approach procedures on their website free of charge (FAA Charts). Is there a similar site provided by EASA or the EU?
14
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5answers
8k views

Where can I get the FAA data that defines airspace, including MOAs etc.?

I was looking at http://www.gelib.com/aeronautical-charts-united-states.htm, where you can download shape files for Google Earth that show US airspaces. I'm writing some software that has a similar ...
34
votes
2answers
10k views

What does “OBJECTIONABLE” indicate on a VFR chart?

On the Tulsa, Oklahoma VFR sectional the top of the outer Class C ring says "OBJECTIONABLE". Does this indicate some information on the chart is in dispute? I don't see anything in the VFR chart ...
20
votes
3answers
6k views

Do pilots using an electronic flight bag need to carry paper charts?

If a pilot uses an electronic flight bag (say, an iPad with ForeFlight or WingX), are they required to carry paper charts as a backup? Do different rules apply to operations under Parts 91, 121, and ...
13
votes
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 ...
3
votes
3answers
322 views

Can the Class-E-to-surface airspace near Eagle County Regional airport (KEGE) and Marshall AAF (KFRI) be ignored when the tower is open?

Can the Class-E-to-surface designation indicated by the dashed magenta lines outside the dashed blue circle at Eagle County Regional airport (KEGE) be ignored when the tower is open? Likewise at ...
32
votes
2answers
9k views

What does the snowflake with temperature symbol on an approach plate mean?

I've only seen the snowflake symbol with temperature listed on this one approach plate for KASE airport in Aspen, CO. I looked for it in the legend but didn't find it. Does anyone know what the ...
10
votes
3answers
3k views

Where is it documented an airport is military?

On sectional charts (at least in the US) military airports appear with the same symbols as public airports, eg. KBKF. Some military bases are within restricted airspace. I would assume all military ...
9
votes
1answer
2k views

On SIGWX (significant weather) charts, what does **/** mean?

On SIGWX charts, it shows pairs of symbols with, say, */** or **/**. I know what the symbols mean on either side, but why are ...
8
votes
2answers
5k views

How are Victor airways defined and numbered?

I am wondering how Victor airways get determined. What determines how many 'segments' they are? For example some airways connect two VORs only, while other airways stretch across (or "connect the ...
4
votes
1answer
169 views

What are the historical precedents of today's E2 and E4 airspace? (US)

What are the historical precedents of today's E2 and E4 airspace? From what previous airspace classes did these airspaces evolve? How do these precedents help us understand the significance of the ...
6
votes
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
votes
1answer
351 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 ...
55
votes
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
votes
2answers
409 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? (...
4
votes
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: ...
4
votes
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 ...
3
votes
2answers
184 views

Re old (1993) US VFR sectional charts— when did the term “Class E” first appear?

When did the phrase "Class E" or "Class E airspace" first appear on the legend of US VFR sectional charts, to identify the meaning of the thin dashed magenta line? I'd like to narrow down the date as ...
1
vote
1answer
140 views

In the US, how does the distinction between E2 and E3/E4 airspace affect pilots?

In the US, practically speaking, how does the distinction between the E2 and E3/E4 subtypes of Class E airspace affect pilots?
17
votes
2answers
962 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 ...
15
votes
4answers
9k views

Where can I find GA VFR maps for Australia?

Are there any sites similar to SkyVector (US-based) for GA aviation maps in Australia? I understand that Air Services Australia has miscellaneous single-purposes maps available, but they seem to be ...
13
votes
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 ...
7
votes
1answer
516 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
votes
2answers
590 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 "...
5
votes
1answer
341 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 ...
5
votes
1answer
714 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 ...
4
votes
1answer
3k views

What are the differences between Canadian VNCs and US Sectional charts?

I've been looking at Canadian VNCs (VFR Navigation Charts) and they look surprisingly different from US sectionals. A big difference seems to be how the airspace is designed, but there seem to be a ...
3
votes
2answers
158 views

Why are KACV and KTLV depicted differently on sectional charts than KSGU, KBIH, and KTPL, even though each is E2 w/ E4 extensions?

This question specifically is about non-towered airports surrounded by round circles of E2 airspace, with one or more "extensions" of E4 airspace that abut the E2 airspace. Therefore it is not the ...
3
votes
2answers
3k 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?
3
votes
2answers
132 views

Where can I find a canonical list of sources for worldwide digital GA VFR maps?

Related question: Where can I find GA VFR maps for Australia? For various areas of the world, where are authoritative General Aviation VFR maps, charts, and so on available on the web?
2
votes
1answer
410 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 ...
1
vote
0answers
65 views

What is the map projection for FAA terminal procedure charts?

What is the map projection for FAA terminal procedure charts and what are the parameters (standard parallels) for each specific airport? I couldn’t find any information with the publication ...
1
vote
3answers
142 views

Re old (1992) US VFR sectional charts— when was the thin dashed magenta line first used?

When did the thin dashed magenta line, currently used to illustrate Class-E-to-surface airspace, first appear on the legend of US VFR sectional charts? I'd like to narrow down the date as precisely ...
1
vote
2answers
461 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, ...
0
votes
1answer
190 views

May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17?

May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17? http://vfrmap.com/?type=vfrc&lat=39.643&lon=-106.916&zoom=...