Questions tagged [icao]

The International Civil Aviation Organization is a UN body that develops international aviation standards.

The International Civil Aviation Organization is a UN body headquartered in Montreal. It plays a major role in international aviation by developing and promoting unified international standards for training, navigation, infrastructure, flight planning and other aspects of aviation.

Use this tag for questions about ICAO itself, e.g. membership, publications, legal authority. For questions about international aviation regulations and standards defined by ICAO, use instead.

For questions about regulations in specific countries or regulations defined by other bodies such as the FAA or EASA, use the more appropriate 'local' tag, e.g. , .

137 questions
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What does ICAO database "engine count c" mean?

In the official ICAO database 5 aircraft are marked with an engine count C. What is that supposed to mean? Normally engine count is a number (0,1,2,3...).
Horst Walter
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What is the difference between ICAO Annexes and Documents?

I have gone through many ICAO and aviation related sites, but I still can not understand the basic difference between annexes and docs. What is it?
joydeep
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6
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What are the ICAO PANS? What are their contents?

There are how many I.C.A.O. PANS? What are their basic contents? I have tried a lot in internet, but could not find out.
joydeep
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3
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How to pronounce ICAO?

How to pronounce ICAO, correctly? Civil Aviation students claim that their teacher told them to pronounce it as /ˌaɪˌkeɪˈoʊ/, eye-KAY-oh but when I look at Cambridge Dictionary it pronounces ICAO differently:…
user45166
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Migration from AFTN to AMHS?

My question is: Is there any obligation from ICAO about migration from AFTN to AMHS? and If that's so, what are deadlines? Any ICAO doc about this?
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What is the difference between APV I and APV II?

Been reading all these ICAO documents about APV I and II and none of them clearly describe (from a pilots perspective) the difference. Please help
Dededkd
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List of all FIR and their authorities

Wikipedia has this page https://en.wikipedia.org/wiki/Flight_information_region containing a table of all FIR (with ICAO codes) and their respective authority countries. Is there any place where I can download an updated list like this one as a CSV…
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If the number of flights in the world exceed 2^24 how will ICAO allocate the address to the flights?

What is the approximate number of commercial flights in the world as of now? If the number of flights do exceed will they use the concept of frequency reuse in cell phones(dynamic allocation of addresses)?
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Who and where can access the list of ICAO24 addresses?

Who and where can access the list of ICAO24 addresses?
Gábor
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