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This article should probably be combined with the article /Airspace — Preceding unsigned comment added by Waspnhm (talk • contribs) 04:57, 30 October 2014 (UTC)[reply]

This article uses alot of jargon and codes, and isn't very clear to people with little or no knowledge on the subject, such as myself --Phantom784 23:33, 9 May 2006 (UTC)[reply]

I'll see if I can find time to re-write, however I doubt that there'll be much change as aviation is unavoidably full of jargon. It is tedious to explain in lay terms every time it is used: that's what we have wikilinks for.BaseTurnComplete 21:08, 15 June 2006 (UTC)[reply]

Class C & D Airspace Clearance?

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While class C & D airspace requires communication with ATC prior to entering airspace, does it actually require clearance? Class B airspace specifically requires a clearance prior to entering airspace but per FAA.gov Class C & D airspace does not specifically require ATC clearance.

Cited from FAA.GOV (http://aspmhelp.faa.gov/index.php/Airspace_Classification)

Class B: "An air traffic control (ATC) clearance is required for all aircraft to operate in the area, and all aircraft that are so cleared receive separation services within the airspace"

Class C: "Each aircraft must establish two-way radio communications with the ATC facility providing air traffic services prior to entering the airspace and thereafter maintain those communications while within the airspace."

Class D: "Unless otherwise authorized, each aircraft must establish two-way radio communications with the ATC facility providing air traffi c services prior to entering the airspace and thereafter maintain those communications while in the airspace." —Preceding unsigned comment added by 204.194.77.3 (talk) 15:04, 22 September 2010 (UTC)[reply]

This depends on which country you are operating in. In Australia and New Zealand a clearance is required for all aircraft entering Class C and Class D airspace. An IFR aircraft requires a clearance in Class E but an IFR aircraft does not. Jaxsonjo (talk) 10:49, 6 October 2011 (UTC)[reply]

SIX Classes of Airspace?

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As it in http://www.faa.gov/ats/asc/publications/02_ACE/APPEND_A.PDF, There are six classes, instead of seven, of U.S. airspace: CAT I: Class A to E Airspace as controlled, and CAT II: Class G, as uncontrolled airspace.

--Natasha2006 17:13, 16 March 2007 (UTC)[reply]

Correct. The United States does not use class F airspace, as explained in the "United States" subsection of the article. ChadScott 21:19, 16 March 2007 (UTC)[reply]


I need reference for ICAO airspace classification definition.

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I am looking for official ICAO definition on airspace classification for reference. I tried to search it on www.icao.int, but didn't get it. May someone who knows about it tell me please?

--Natasha2006 14:38, 23 March 2007 (UTC)[reply]

I believe the official definitions are published in the ICAO annex 11, but I haven't found an on-line version of it. You can, however, order printed volumes from the ICAO. -- ChadScott 03:18, 28 March 2007 (UTC)[reply]
Annoyingly, ICAO does not make its documents available on the web. Instead, it charges for CD or paper copies. My personal opinion is that this is not satisfactory for the de facto global aviation regulator in this day and age, but there you go.BaseTurnComplete 20:35, 28 March 2007 (UTC)[reply]

I believe this problem has been solved. I added the following reference: "ICAO's airspace classification scheme is defined in ICAO Annex 11: Air Traffic Services, Chapter 2, Section 2.6., available at [1]"Sincx (talk) 06:43, 5 April 2014 (UTC)[reply]

Canadian airspace

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Can someone knowledgeable please fill in the Canada section? It's way too basic. ChadScott 03:07, 28 March 2007 (UTC)[reply]

Class C&D VFR Clearance

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Under "ICAO Definitions" it is stated that "VFR aircraft require radio contact prior to entering airspace (Not to be confused with ATC clearance)".

However under "United States" it is stated that "The U.S. uses a modified version of the ICAO class C and D airspace, where only radio contact with ATC rather than an ATC clearance is required for VFR operations."

This leads me to believe that the ICAO section is actually quoting a US specific variation. Can this be confirmed? —Preceding unsigned comment added by 87.254.76.48 (talk) 21:56, 4 October 2007 (UTC)[reply]

It appears that someone had changed the ICAO definition to the US-only one. Per ICAO, all flights need an ATC clearance to enter Class C and D airsapce.BaseTurnComplete (talk) 22:05, 6 February 2008 (UTC)[reply]

New Classifications - N, K and U

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Can someone find more detailed information on the proposed reduction in airspace classes to three?

I've added some links from Flight and Eurocontrol, but something from ICAO would be preferable. —Preceding unsigned comment added by 195.194.196.53 (talk) 08:11, 30 July 2009 (UTC) aerospace[reply]

ICAO Definitions Update

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Hi all, I've updated the ICAO Definitions section by adding a table which summarises the information in the prose above. I've left the prose in, however as it looks like it might be the official definitions, in which case there is merit in having it there in its current form, otherwise I would suggest it is removed as it is very difficult to parse when looking for specific info. --Freedo50 (talk) 17:20, 12 July 2010 (UTC)[reply]

Class A airports

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The Gibraltar Airport article mentions that it's one of the only Class A airports in the world. (I guess that means it's IFR-only?) Perhaps this topic deserves mention in the Airspace class article. Which other Class A airports are there? - Eric (talk) 10:35, 21 July 2010 (UTC)[reply]

The article doesn't say that now (May 2024) which is good, because there is no such thing as a "Class A airport." WP seems to have some articles with lists of Class B, C, D airports but really these lists are about airports in those classes of airspace. Altaphon (talk) 01:12, 31 May 2024 (UTC)[reply]

Class G airspace and Special Airspace=

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Hi all I did was give a little more detail for class G airspace who can do what and who has authority in it but also I added Special Airspace which I felt it need to be in here and to be covered to get the full understanding for it. Table part I did not do but it does need to get filled in there too, I just did not have time to fill that part in. — Preceding unsigned comment added by Mdogcas (talk • contribs) 17:22, 19 April 2015 (UTC)[reply]

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