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Questions tagged [airspace]

Airspace means the air above a specific country (e.g. US airspace) but for aviation purposes it is usually divided into different types, each of which may have different regulations.

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Which international routes might save fuel and time by using a potential newly “deemed safe” North Korean air space?

The Reuters News item Exclusive: U.S. blocks North Korean air traffic revival ahead of Trump-Kim summit - sources says: If the space was deemed safe, international airlines could save fuel and time ...
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Why does this flight fly over Bangladesh, and not over Nepal and China? [duplicate]

Lately, I have been following flights flying eastwards from India. More often than not, I see them taking a longer route over Bangladesh and Myanmar, and not a typical parabolic route over Nepal and ...
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E class airspace(transition area)

Extension area(E airspace) shown as shaded magenta start from 700AGL but how to measure 700AGL over the water like in this picture? Cuz there’s no land…
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Which airspace requires what RNP?

How do I know which airspace requires what RNP value? More specifically, can I go from NY to London with just BRNAV providing I stay above the NAT HLA?
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Where can I find approved entry/exit points for Free Route Airspace (FRA)?

How can I find approved entry/exit points for Free Route Airspace (FRA) in different countries?
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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. I what immediately jumped out at me is that there are no charted airports in any of this airspace; ...
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Where can I find US ARTCC sector boundary coordinates?

For an academic purpose, I would like to map US airspace using GIS tools with coordinates. I found the airspace boundary coordinates from the eNASR, but no luck with the sector boundaries. Any ...
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Is a mode C transponder required underneath Class C airspace?

FAR 91.215 states that a mode C transponder is required for... all aircraft in all airspace above the ceiling and within the lateral boundaries of a Class B or Class C airspace area designated ...
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Why are waypoints not named uniquely?

Waypoint names are not unique. Why ? This is unnecessary (it would be possible to use unique names only). It introduces potential for confusion. So why are duplicate waypoint names permissible and ...
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If all aircraft were TCAS-equipped, how would this change ATC routines?

« The primary purpose of ATC worldwide is to prevent collisions, organize and expedite the flow of air traffic, and provide information and other support for pilots. » (source) If all aircraft ...
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Why are both ATC and TCAS tasked to prevent collisions although TCAS takes precedence anyway?

« The primary purpose of ATC worldwide is to prevent collisions [...] Many aircraft also have collision avoidance systems, which provide additional safety by warning pilots when other aircraft get ...
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What’s service does ATC service include?

As I’ve studied on ATC service and airspace class by referring to ICAO Annex, I have some doubts on ATC service. According to ICAO Annex 11, Class D airspace is defined as “IFR and VFR flights are ...
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Can I fly through these military airfields' class C airspace?

I am a low time private pilot now based in Pensacola. I’m a bit unsure how the Class C of PNS/NAS Whiting Field is handled. As you can see they all overlap. PNS is a civilian field while the others ...
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Is this Class G Airspace?

So it's been about a decade since I got my private pilot cert and almost as long since I got to fly. My map reading is a little rusty. I'm trying to fly my drone at a local park and it's warning me ...
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What airspaces are the Florida Everglades? [closed]

If I'm flying through the Florida Everglades, what airspace would it be?
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Why does Qatar Airways fly over Syria and Iraq?

I saw on Flightradar that Qatar Airways still fly over Syria and Iraq. Why do they think that airspace is safe? I dont want to have to worry about my plane being shot out of the sky on my trip.
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Should I keep specific distance from Class B?

I was wondering if I fly my c172 in class E airspace, and Class B base was 5000 MSL. should I keep specific distance from Class B? or is it okay to go up to 4900 MSL but not reaching 5000 MSL?
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What happens when flying on a Victor airway but through a class B or C airspace?

I think it´s a very simple doubt but also very important, and i can´t find the answer. If you are flying on a Federal Airway that at some point cross a class B airspace (for example)...do you need ...
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Is 1N2 (Spadaro) in class G or D airspace?

I am confused about the situation where an airport is located in class G airspace and at the same time located in class D airspace. As we can see the picture below Spadaro (1N2) is located inside the ...
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In India, what is the difference between “local flying area” and “airspace”?

Can anyone define what is a "local flying area" and an "airspace" and what is the difference between the two? It would be good if the definition is as per Indian rules.
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Who controls airspace and time in my area on helicopters?

I live in Newport Beach which is located in Orange County, California. I recently moved to an area where helicopters fly once in a while at 2-3 am above my house. Since I live on a hill, the sound is ...
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How does airspace work with the navy?

Let's say some ships from the US Navy are in the middle of the Pacific Ocean. Is there anything to stop another country, say the Chinese or the Russians flying around them in circles, either to watch ...
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What class is the airspace at KGCN when the tower is closed?

I was wondering if someone could help me figure out how the airspace around the Grand Canyon National Park Airport (KGCN) works. The chart supplement here says: AIRSPACE: CLASS D svc 1 Jun thru 30 ...
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Is the airspace at KUGN class G from the surface to 1200' AGL where class E starts when the tower is closed?

The chart supplement for KUGN here says "AIRSPACE: CLASS D SVC 1200-0200Z other times CLASS E." Does that mean that when the tower is closed, the class D airspace switches to class E surface area ...
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How to find if an aircraft is inside an airspace using latitude and longitude? [closed]

I have the data of latitude and longitude of $n$ points on the boundary of the airspace of a country. I also have the coordinates of the current location of an aircraft. Using this data, how do I find ...
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Can ATC separate IFR traffic in class A airspace from VFR traffic in class E?

Is it possible for ATC to apply 3 miles separation between an IFR aircraft in class A and a VFR aircraft operating in class E, just below class A?
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What does the “T” on sectional charts mean in reference to airspace altitude?

These are present in the San Francisco class bravo / Oakland class charlie and O'Hare class bravo / Midway class charlie.
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When flying VFR without GPS, how do pilots know if they are inside controlled airspace or not?

How do VFR pilots know whether or not they are inside controlled airspace if they don't have GPS onboard?
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What airspace are ultralight pilots allowed to use? [duplicate]

So I've been watching videos and thinking about getting into ultra-light aviation. Flying in a personal air-trike or paramotor looks like a lot of fun. Being new to the aviation arena I had a couple ...
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How is the control of airspace over disputed territories determined?

Reading this question about the division of airspace over the Persian Gulf reminded me of another potential issue regarding Persian Gulf airspace: the numerous territorial disputes in the area, such ...
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Sightseeing in a class Bravo airspace?

I went to go fly around DFW today, wanted to do some sight see of the city and such. When I got in the air I contacted approach to get VFR flight following and was going to remain outside of the class ...
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What is Lower Traffic Area (LTA) airspace in France?

In France, AIP ENR-2.1 subsection 2.1.2 defines airspaces of type CTA (control area), UTA (upper traffic area) and LTA (lower traffic area). I'm not familiar with LTA which appears not to exist ...
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Are there any locations where I could launch a rockoon with minimal red tape?

I'm currently working on a research project on hypersonic control surfaces, and as part of it, I'd like to launch a rocket-assisted lifting body from a high-altitude balloon. Are there any locations ...
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Why does U.S. airspace revert to class E above flight level 600?

According to Wikipedia, airspace defaults to class E below 18,000 feet AMSL (that is, all airspace below 18,000 feet AMSL is class E unless otherwise specified), whereas all airspace from 18,000 feet ...
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What are the FAA regulations on operating UAVs in class E airspace above FL600?

What are the regulations on flying UAVs (commercial or experimental) above FL600, i.e. in class E airspace above class A? I want to make a HAPS (High Altitude Pseudo Satellite) and operate it in the ...
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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 ...
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What is Arctic Control Area (ACA)?

I saw that in Jeppesen airway manual but I didn't find a definition for it. What is that? How to establish it? Who establishes it and for what reason?
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When is this Class D airspace not Class D airspace?

The Terminal Area Chart (TAC) shows the Class D airspace for Los Angeles International Airport (KLAX) view the full TAC. I have highlighted in green the north and south portions of the Class D ...
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Where does the Olive Branch (KOLV) class D ceiling meet the Memphis (KMEM) class B floor?

I'm having an internal debate on interpreting the Class D ceiling in part of the the Memphis TAC. My understanding was in the case of a Class D under a Class B shelf, the ceiling of the Class D ends ...
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Is there a triangle representation for the Canadian airspace?

I'm looking for the following figure, except modified for Canadian airspace. Does anybody have a copy, or can help me modify this one? I searched everywhere and could not find one.
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Which American State Aircraft use the RVSM exemption?

Reading about RVSM, I noted the exemption for "state aircraft." This is summarize in wikipedia as "State aircraft", which includes aircraft used in military, customs and police service, are ...
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Is the official weather report for an airport in Class D airspace controlling for its Class E surface extension?

If the official weather report for an airport for which Class D airspace is designated is showing IMC, is that controlling for a Class E surface extension (designated for that airport)? For example, ...
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What class airspace is depicted in the magenta colored area southeast of the Lake Havasu City, Arizona AIrport?

What class airspace is depicted in the picture below within the wide magenta colored bar southeast of the Lake Havasu City, Arizona Airport (on the Phoenix, Arizona Sectional Chart)? What are the ...
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Why haven't the remaining TRSAs been converted to Class C airspace?

The communication and radar equipment is already in place to provide radar services. ATC staff them. It seems like the biggest investment to get them converted to class C is charting. Why haven't they ...
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What exactly is the airspace above CYYZ (Toronto)?

I'm planning my first real life cross country trip from KFRG to CYKZ. I'm trying to understand the Toronto Airspace: Is a Canadian Class C airspace the same as a US Class B airspace? Toronto Pearson ...
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What is the best VFR route to CYKZ (ButtonVille) when approaching from the southeast?

I'm planning my first real life cross country trip from KFRG to CYKZ. But I'm very confused by the Toronto airspace. My main question is around how to approach ButtonVille airport from the south (say ...
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Does a class E airspace still exist when the associated airport is closed?

An airport tower closes at 1600 hours: Does the extension (class E from surface up) airspace becomes non existing? Can I fly through since the tower is closed?
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Where exactly is the 700 and 1200 foot AGL for class E airspace measured from?

Are the AGL numbers measured from the Maximum Elevation Figure listed on the sectional?
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Can a holding pattern be in class G airspace?

Is separation provided between aircraft holding in class G airspace? Could there be a holding stack in class G?
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Is a clearance needed to depart a helipad in class B airspace?

I have noticed statements like the following on sectionals: This would seem to suggest that a clearance is needed to "depart" any helipad, even if you are staying under the wedding cake. Is that true?...