For questions relating to navigation charts, but not performance charts.
Questions tagged [aeronautical-charts]
342 questions
27
votes
7 answers
What does the "DO NOT USE FOR NAVIGATION" indication mean?
Sometimes when I'm browsing IAC charts online I find a "DO NOT USE FOR NAVIGATION" notice printed on the chart. Not always though.
For example, have a look at the chart for Queenstown RNAV (RNP) Y RWY 05.
See the notice there?
I have always…
codeaviator
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15
votes
2 answers
What does "MERMA" mean on the Los Angeles TAC chart?
Just wondering what "MERMA" means on the Los Angeles TAC chart:
slantalpha
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13
votes
4 answers
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 corresponds to it, but I wasn't familiar with this…
ryan1618
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12
votes
1 answer
What is "Accident" on a VFR sectional?
Seen on the map just north of 2G4 (Garrett Country Airport) is a dot labeled "Accident".
(Direct link to map.)
I never noticed something like that before, and didn't fly close enough to find out what it was. What kind of "accident" is the…
Kenn Sebesta
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10
votes
1 answer
What does 00 mean on a sectional below the airport runway information?
What does 00-50 mean on the sectional chart under PHNL (see picture)?
Dev999
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10
votes
2 answers
Is there a difference between MEA and MOCA within 22 nm of a VOR?
As we all know from our instrument training, the MOCA is:
MINIMUM OBSTRUCTION CLEARANCE ALTITUDE (MOCA)- The lowest published altitude in effect between radio fixes on VOR airways, off-airway routes, or route segments which meets obstacle clearance…
Steve V.
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9
votes
2 answers
What is “abnd” on the U.S. VFR Sectional Chart?
I have looked at the sectional legend and FAA aeronautical chart user guides and have not seen any answer for this.
What is “abnd” on the U.S. VFR Sectional Chart?
Pugz
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9
votes
2 answers
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?
pmoubed
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8
votes
4 answers
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 to align (as you can see in the first image), and…
Keegan
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7
votes
1 answer
Can IAF and IF be in the same spot?
While looking over an ILS approach chart,
I found that there is a fix where says : (IF/IAF) ACZUP ...
And I was consfused whether the two IF and IAF can be in the same place, or the spot is used as IAF or IF in a certain occasion.
Could anyone tell…
Student412
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6
votes
1 answer
What is the number in a closed box right below a victor airway?
I see this little number in my TAC.
What is that "42" inside a box right below v208-458? I looked through charts guide to see if I can find that symbol but I couldn't find anything (pretty sure I missed it). Does it have something to do with victor…
Jonathan
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5
votes
1 answer
What does the "Caution" box mean on the sectional near Half Moon Bay, California?
What does this Caution box on the sectional chart near Half Moon Bay, California mean? Is there an official reference for the meaning of this box?
rvernica
- 383
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4
votes
3 answers
Are Jeppesen Approach, SID charts in Magnetic North or True North?
Usually, when making charts, they use true north up for their charts.
However, I found that there is a north arrow in jeppesen approach and sid chart.
And.. what north arrow means?
Is it indicating true north or magnetic north?
moon
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4
votes
1 answer
What units are used for the horizontal grid lines on a sectional?
On a standard 1:500,000 aviation sectional chart, the map is broken down into quadrangle "sections" with a maximum elevation figure printed in blue in the center.
Using a chart-plotter I can see that the vertical (north-south) grid lines printed…
Josh Kuhn
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3
votes
1 answer
Example of where Class Echo abuts class Golf
Aeronautical Chart Users' Guide shows an example of a fuzzy magenta line bordering with class Golf airspace. I tried to look but couldn't find any examples on the charts. If you have seen it, please point me in the right direction. Much…
masterov
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