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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3
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1answer
330 views

How different is flying through Free Route Airspace (FRA)?

I understand the flight planning and ATC aspects of Free Route Airspace. I'm trying to understand what a pilot does differently while flying in an FRA. Are there changes to standard procedures while ...
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Where could I find a MATLAB implementation of TCAS algorithms?

Where could I find a MATLAB implementation of TCAS algorithms and simulation? My research work deals with collision avoidance of a multi-UAV scenario in a small airspace.
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516 views

Is a holding pattern always counter-clockwise?

Is a holding pattern always counter-clockwise? Or is it dependent upon the controlling airspace?
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537 views

Where can the airspace boundary coordinates for Fayetteville TRACON be found?

I would like a map depicting the airspace owned by Fayetteville TRACON that includes lat/long coordinates (i.e. not just a cartoon-y outline with no information). Ideally, I'd like to find a site ...
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Is there any class G airspace that extends to 14,500 MSL? [duplicate]

The U.S. Aeronautical Information Manual, part 3−2−6, lists a variety of airspace areas which may be designated type E. From reading this section, I get the impression that "typical" class E airspace ...
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1answer
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What regulations apply to flying near blasting areas in Canada?

I was flying near CYPK the other day and for convenience and since I was close to it, reported as being "above the blasting area". My instructor pointed out better not to do that. That made me think ...
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484 views

How did ATC procedures and airspace structure change after San Diego PSA collision?

In 1978, a Pacific Southwest Airlines aircraft collided with a Cessna 172 while approaching the San Diego airport in California. The GA aircraft was piloted by a student, and crossed the approach ...
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When do you contact ATC when departing from a non-towered airport into class B controlled airspace?

When do you contact ATC when departing from a non-towered airport into class B controlled airspace? This is the situation where the uncontrolled airport sits under the Class B shelf.
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When do you contact ATC when departing from a non-towered airport into class D controlled airspace?

I had this question posed to me the other day and I wanted to make sure I responded correctly. When do you contact ATC when departing from a non-towered airport into class D controlled airspace? ...
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Why doesn't EVA Air BR087 (Taipei to Paris) follow the shortest path?

I've noticed that the flight BR087 from TPE to CDG doesn't follow an orthodrome. Instead, it seems to take great pains to avoid the Chinese airspace entirely. Why? EVA Air has other flights ...
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What regulations are in place for ultralight vehicles flying over US national parks?

A flight instructor i met with recently said that flying ultralight over national parks is a crime. The law section of the powered paragliders bible has nothing on parks. One would think that ...
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1answer
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What's a TRA and how does it differ from a TFR?

This is from a recent email from the FAA Safety Team: The FAA will soon begin limited use of a Temporary Restricted Area (TRA) in certain areas when the types of operation(s) to be conducted ...
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Why does Turkish airlines still fly over Iraq, is it safe?

I realized that Turkish Airlines have a lot of flights over Iraq. For example, here is a flight from Istanbul to Maldives (TK 730). Do you know if it is safe to fly there? Till today I thought ...
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1answer
690 views

Is there a difference between an Area Control Center (US) and a Flight Information Region (ICAO)?

From the wiki page, what I understand is an Area Control Center (ACC), also known as a Center (or in some cases, en-route, as opposed to TRACON control), is a facility responsible for controlling ...
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Apart from Kenya, what are the current dangerous / unsafe airspaces?

Notams are regularly released to warn about unsafe areas, e.g. Kenya: A0040/15 - SECURITY .. UNITED STATES OF AMERICA ADVISORY TO U.S. OPERATORS CONCERNING POSSIBLE ATTACKS WITH MAN - ...
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1answer
584 views

Is there a list of directs and preferred routes within USA airspace?

In Europe it is possible to find a list of directs which are contained in the Appendix 4 of the Route Availability Document from the Eurocontrol website. My goal is to find the analogous information ...
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Why can US deny airspace to commercial flights?

On September 25, 2011 i flew from Mexico City (MMMX) to Frankfurt, Germany (EDDF). It was a comfortable night flight in a Boeing 747 until we started to fly over the Gulf of Mexico in holding pattern....
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How is airspace in the Persian Gulf determined?

In the wake of the Qatar diplomatic crisis, I saw this image from Business Insider: How is airspace in the Persian Gulf determined? Why, for instance, does Bahrain have such a disproportionately ...
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Can one country really ban another from using its airspace?

Consider the recent restriction by Saudi Arabia on Qatar Airways flights, which prevents Qatar flights from flying over Saudi airspace. Qatar now has to use longer routes and go fly around the land ...
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What were the 20 airspace classes in the US before 1993?

ICAO adopted the current airspace classification in 1990. The US followed suit in 1993. But, I found this: In case you didn't know, the U.S. had 20 different types of airspace designations prior ...
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What is the difference between published and unpublished waypoints?

While reading some articles about free route airspaces I found reference to two types of waypoints: Free route airspace (FRA) is a specified airspace within which users can freely plan a route ...
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What would be the airspace class when no vignette is visible on a US VFR sectional chart?

If a airport doesn't have a pink vignette nor blue vignette on a VFR sectional chart, but the airports around this particular airport has pink vignettes, would this airport's Class E start at 1200 AGL ...
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1answer
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What are the various fees associated with flying? [closed]

I am aware of airport landing fees, fuel fees etc, but it was brought to my attention that there is airspace charges? And especially in Canada, the fees are horrendous. What are the various types of ...
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What is the legal altitude to fly through Yosemite Valley (US)?

I have a question regarding flying in the Yosemite Valley national park, which I flew over last weekend in an open-cockpit gyroplane. The sectional states you must be a minimum of 2,000 ft about the ...
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3answers
393 views

Is there a standard format to exchange airspace information in electronic form?

I am looking for information about airspace definitions. On maps they look great and a pilot has no problem reading maps and NOTAMs, but what about autopilots? Do they use some kind of standardized ...
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372 views

Why do some Canadian Class E airspaces have no ATC frequency on VFR maps?

PPL student here, studying airspace. Looking at the airspace around Vancouver, BC (see Vancouver VTA) I see that most of the lower mainland is class E controlled airspace. "No Contact" tells me that ...
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Are there any ILS approaches in Class E airspace?

When descending on an ILS you can descend to 100' above the TDZE if you have the approach lighting system in sight. Cody Johnson wrote an article explaining how one pilot mis-interpreted what the ...
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Is it possible for a non-towered airport to have keyhole extensions Class E starting at the surface?

(skyvector.com, modified) The Springfield, OH airport, KSGH, is a non-towered airport with both precision and non-precision instrument approach procedures. To support these approaches, there are a ...
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238 views

What's the north boundary of the KINS Class D? (Or: does a SUA designation take precedence over controlled airspace?)

This is inspired by the question regarding aerobatics over a surface class D area. KINS (Creech AFB) sits right outside the south boundary of the Nellis Range Complex (R4806W to be precise). ...
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May aerobatics be performed over a controlled airport without getting a waiver?

CFR 14 Part 91.303 states: Aerobatic flight. No person may operate an aircraft in aerobatic flight-- (a) Over any congested area of a city, town, or settlement; (b) Over an open air assembly of ...
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Which parts of class E airspace can an ultralight (part 103) fly in without prior ATC authorization?

I'd like to clarify a very specific statement from 14 CFR Part 103: 103.17 OPERATIONS IN CERTAIN AIRSPACE No Person may operate an ultralight vehicle within Class A, Class B, Class C, or Class D ...
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788 views

How close can I fly to a bridge?

I want to take some pictures of a bridge. How close can my pilot get me?
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How are range violations during a launch countdown handled?

I was watching the ULA Atlas V IBIRS countdown tonight but the launch was scrubbed (after some technical issues) ultimately because of a range violation: an airplane was in the restricted area. I've ...
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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 ...
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2answers
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What separation and information does ATC provide in different airspace classes?

I am busy studying radio for my PPL in South Africa, but I'm struggling to understand the ICAO definitions of the different airspace classes, and how ATC separates traffic in them. I understand that ...
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Where can I download AUP/UUP in AIXM format from FAA? [closed]

I am studying about Airspace Use Plan/Updated Use Plan (AUP/UUP). A defined by wikipedia: The Airspace Use Plan (or AUP) is defined as "an Airspace Management (ASM) message of NOTAM status ...
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1answer
146 views

Where to find comprehensive description of Special Use Airspaces (SUAs)? [closed]

Can you suggest me some document or website where I can learn about Special Use Airspaces? My goal is to understand the following topics: SUA definition Types of SUAs SUA pubblication SUA creation ...
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Is an ultralight aircraft allowed to fly near Class B airspace?

May an ultralight vehicle operating under FAR part 103 operate within Class G and E airspace while within the mode C veil surrounding a Class B airport? Quoting directly from Title 14 CFR 91.1 ...
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1answer
553 views

What is the difference between directs and shortcuts in the Route Availability Document?

I am studying about directs and shortcuts in aviation. While flying, an airplane can move from an airway to another by using directs or shortcuts. What I want understand is the difference between ...
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288 views

What is the difference between SUA (Special Use Airspace) and FUA (Flexible Use Airspace)?

The EUROCONTROL Concept of the Flexible Use of Airspace (FUA) is that: an ASM concept currently applied in the ECAC area and based on the fundamental principle that airspace should no longer be ...
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How did ICAO SARPS come to include the 250 knots speed limit for aircraft below 10,000 feet?

In certain airspace classes, a speed limit of 250 knots IAS is imposed for aircraft flying below FL100/10.000FT, according to the airspace classes defined by ICAO. How did this limit find its way into ...
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What is the criteria for determining whether an airport will be towered or uncontrolled? [duplicate]

I thought about this in reference to the question about Schamburg Airport in Chicago. Is there a particular criteria for an airport, for instance the amount of instrument traffic going into and out ...
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5answers
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Can civilian aircraft fly through or land in restricted airspace in an emergency?

This is a super hypothetical question of mine. I was wondering if civilian pilots who happened to be faced with a severe emergency could fly through or possibly request to land in restricted airspace? ...
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1answer
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What is the difference between SUA and SAA?

I would like to understand the difference between Special Use Airspace (SUA) and Special Activity Airspace (SAA). I found the following definitions. Eurocontrol Lexicon for SUA (from FAA): ...
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0answers
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Is there a “maximum” airplane count in the visible sky at a given location? [closed]

At night, I look at the planes in the sky and count them. I can normally spot between 2-5 planes, never more. As the visible sky is always a constant area and there are security distances and aerial ...
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What is the benefit or motivation for having Class G airspace?

I'm looking at the differences between Class E and Class G (AIM 3-2-6) airspace in the United States and I get that there are different flight condition requirements depending on AGL/MSL altitudes, ...
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993 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 ...
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3answers
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What's usually going on in a “hot” military operations area (in the US)?

Like many people in aviation, I've been around pilots who've flown in or through the edge of a Military Operations Area (MOA) while operating under visual flight rules. Usually they ask ATC if the MOA ...
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1answer
469 views

When must delegated airspace be listed in the AIP?

Two states can agree, through a bilateral letter of agreement, to delegate the responsibility for providing air traffic services (ATS) within a certain airspace from one state to the other. There can ...
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What is a listening squawk?

A NATS video recommends the use of a listening squawk as one of the means to avoid infringing airspaces. What is it? And what is the equivalent of it outside of the UK? Say in the US.