Refer to : Aviation Regulation - ICAO, IATA, and CAAs
Last time we said ICAO they make a unified standardization for all the member nations to follow. But why do we want to follow the standards? It may be difficult to be complied with them. What's the benefit for the members to attend ICAO?
I'm going to say two aspects on this issue, but there may be more. Please share with me if you know more!
First aspect: Freedoms of the Air! (Freedom Rights)
ICAO grants certain freedoms of air for it's member nations.
On the ICAO official websites, they list 9 freedoms of air, but actually only first five freedoms are recognized by international treaty.
Then, let's see what are those freedoms!
1st Freedom Right
You can fly through someone's territory without landing.