Questions tagged [aeronautical-charts]

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

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3
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3answers
358 views

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

May 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 ...
-1
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0answers
37 views

Please explain the 10°drift line method and the 1 in 60 rule method [duplicate]

Please help me. I've been trying to find out more and more about this but I'm still confused. What is the 10° line method and the 1 in 60 rule? I sort of see what they are saying on paper. But I'm ...
1
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1answer
104 views

Why is there no Maltese Cross in this non-precision approach chart which has a FAF?

I am wondering why this chart does not show the FAF with a maltese cross as it is used in non-precision approaches to depict FAF. The chart’s briefing strip refers to D6.0 as the FAF and on the plan ...
8
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2answers
444 views

What is the primary reason that the non-towered airports KACV and KTVL 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 ...
20
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3answers
4k views

Why does Class D overlap class B around SeaTac? …and other Seattle Bravo airspace strangeness

I noticed KBFI's class delta overlaps SeaTac's bravo by 500 to 700 feet. Does anyone know which tower the overlapping airspace belongs to? Does it classify as Bravo airspace and do you need to hear ...
2
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2answers
168 views

What is the floor of the class E airspace near KRHV when the tower is closed?

See the attached diagram snippet for KRHV in Northern California. The chart supplement says that when the tower is closed the airport surface is class G. At this time, what is the floor of class E in ...
5
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1answer
269 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....
0
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1answer
29 views

For find a value of obstacles height below mentioned in intermediate segment why I should take the IAF MOCA instead of FAF MOCA?

It is said that we have to think all risk of flight in this segment that's why we have to take the 4420ft because the plane can be situated any point in this interval
3
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3answers
172 views

What does this symbol on this Aerodrome Chart mean?

Does anyone know what this symbol on aerodrome charts is?
3
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1answer
80 views

Having trouble reading some charts (SBMG-SBLO)

I'm a flight sim user practicing instrument navigation with a short and apparently simple flight, SBMG to SBLO (South America). The distance between the two airports is 49.5 nautical miles (the ...
5
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2answers
121 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 ...
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 ...
7
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2answers
118 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 ...
4
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1answer
623 views

Why do TACANs not have a symbol for compulsory reporting on IFR Enroute Low Altitude charts?

I am studying the IFR Enroute Low Altitude legend, and I noticed that all NAV Aids other than TACAN have a compulsory reporting point icon. They do appear on the STAR/DP legend. Why do TACANs not ...
2
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1answer
144 views

Where to find the parking coordinates of the aircraft in the Apron?

Is it possible to find out the coordinates of where the aircraft park in an the Apron? I mean some sort of list for each terminal or aeronautical chart. I was thinking about the AIP (Aeronautical ...
5
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1answer
217 views

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?
3
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5answers
195 views

How do I improve navigation with a VFR sectional chart?

I am doing my PPL atm. I am struggling to navigate with a VFR sectional chart, I am getting lost more often. How do I fix this issue? Any tips? I have trouble identifying small towns, identifying ...
0
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2answers
136 views

Are the airspace times of operation days of the week in local or Zulu time?

The margin of the Enroute High sectional H-4 claims that the times of operation of the airspace R-5107K near El Paso are "1400-0300Z, MON-FRI" (and other times by NOTAM). If the days of the week are ...
8
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1answer
126 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 ...
12
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2answers
388 views

Gas Venting Stations: What's The Big Deal?

On sectional charts you can see that, through various restrictions, regulators encourage pilots to avoid flying too close to Gas Venting Stations. These seem to be places where natural gas may ...
7
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2answers
596 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 "...
0
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0answers
28 views

In an Intermediate Approach Segment, why are the Optimum Approach ratio 0% and the max. approach ratio 5.2%?

In an Intermediate Approach Segment, the Optimum Approach ratio is 0% and the max. approach ratio is 5.2%. Where do those specific numbers come from, and what do they mean to pilots?
14
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2answers
984 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 ...
2
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2answers
359 views

How can I identify the FAF on this Jeppesen chart?

According to this Jeppesen ILS Approach Chart: How can the FAF be identified? Would it be the point at which the G/S is intercepted? What is the difference between FAF and FAP?
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0answers
67 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 ...
5
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1answer
154 views

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 ...
4
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1answer
172 views

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 ...
1
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1answer
144 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?
4
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1answer
182 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 ...
9
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1answer
255 views

What is the purpose of this interesting pattern of class E airspace in northwest Alaska?

Perusing SkyVector today I noticed this airspace pattern: It can be viewed in more detail here. What immediately jumped out at me is that there are no charted airports in any of this airspace; the ...
20
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1answer
2k views

Why would an airport be depicted with symbology for runways longer than 8,069 feet even though it is reported on the sectional as 7,200 feet?

This airport, KMKO, Muskogee-Davis Regional in Oklahoma southeast of Tulsa is depicted on the sectional chart with symbology normally reserved for airport with a hard surfaced runway longer than 8069 ...
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?
0
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1answer
136 views

What is the inner dashed line on this helicopter chart?

Inside the delta for KSGR is another blue dashed circle. What is this?
4
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1answer
2k 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 ...
2
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2answers
2k views

How do I find the floor of controlled airspace on sectional charts?

So, I understand finding floors and such when seeing something a fraction like 45/10 or 39/SFC, but I've been reviewing and gotten a couple of questions that look like this: What is he floor of the ...
0
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1answer
198 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=...
2
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1answer
89 views

Considering all US untowered airports, what is the furthest distance that E2 airspace (dashed magneta line) projects from the airport?

Considering all US untowered airports (50 states), what is the furthest distance that E2 airspace (dashed magneta line) projects from the airport for which it is designated? Measure from the middle ...
5
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1answer
194 views

How can I overlay a VFR sectional on another map to identify features and landmarks?

How do I know which highways and landmarks on a VFR sectional align with which real-world features? Is there a way to overlay the VFR sectional map from the FAA on top of Google Maps or Bing? Edit: I'...
1
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2answers
1k views

How can I find a final approach fix (FAF)?

I have a problem understanding FAF - how can I find FAf on a precision approach without the lightning bolt/zigzag symbol. I know the Maltese cross means FAF for a non-precision approach. According to ...
-4
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1answer
185 views

Why does this VOR's compass has an arrow pointing north east?

The VOR compass here has an arrow that points to the north east. I never saw an VOR compass like that. What is the explanation?
2
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0answers
98 views

In the US, can airspace simultaneously be E2 and E4? What happens at KSTC to the airspace in the dashed magenta boundary when the tower closes?

In the US, can the same airspace simultaneously be E2 and E4? Consider the case of KSTC -- St. Cloud Regional Airport, MN. http://vfrmap.com/?type=vfrc&lat=45.546&lon=-94.059&zoom=10 On ...
1
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2answers
169 views

Stadium game at Miami blocking runways? [duplicate]

So I was looking for the Miami In in SkyVector and I saw this. Apparently a stadium game has the power to block runways in (At least in US). What is really going on there? I am not well acquinted ...
3
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2answers
161 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 ...
2
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2answers
97 views

Measurement discrepancy on vfrmap dot com sectional — is the grid wrong?

At Nome Alaska-- KOME-- the E2 airspace (dashed magenta line) is listed as extending 13.2 (nautical) miles east of the airport-- according to this source page E-9 -- https://www.faa.gov/...
1
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1answer
53 views

Has there been a recent change in the airspace configuration at KFYV— Drake Field near Fayetteville AR?

Has there been a recent change in the airspace configuration at KFYV-- Drake Field near Fayetteville AR? If so, where can we find an official description of that change? KFYV -- Drake Field airport ...
3
votes
1answer
75 views

Why does V165 have two different MEAs over the same route section?

Why does V165 have two distinct MEAs which vary by a large factor (apart from the 180$^{\circ}$ rule of altitudes) considering they would be clearing the same obstacles and receiving signals from the ...
3
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2answers
721 views

Why are some legs of a SID considered transitions, even when there's only one?

For example, consider the BAYPO8 departure from Tampa (KTPA). The CAMJO waypoint is the final waypoint on a rather linear route that does not contain other final waypoints. The second page of the FAA ...
0
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2answers
155 views

Why there is a 'MACH' in this Compressibility Correction Chart?

I couldn't find what 'Mach 1.0' and 'Mach 0.8' are trying to indicate in the middle of the chart. Can anybody explain about this please?
9
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1answer
2k views

What is “(CFMCC)” on an ILS approach chart?

I'm studying the ILS or LOC RWY 3 approach chart for KMKC. I'm trying to figure out what "(CMFCC)" at the runway means. Is it a computer navigation aid?
5
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3answers
3k 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?