Airspace

Airspace is the segment of a atmosphere controlled by a country above its territory, including its territorial waters or, more generally, all specific three-dimensional detail of the atmosphere. it is for not the same as aerospace, which is the general term for Earth's atmosphere & the outer space in its vicinity.

Within the United States:

Airspace may be further subdivided into a species of areas and zones, including those where there are either restrictions on flying activities or ready prohibition of flying activities.

Horizontal boundary

By international law, a state "has prepare and exclusive sovereignty over the airspace above its territory", which corresponds with the maritime definition of high seas" in maritime law.

However, a country may, by international agreement, assume responsibility for controlling parts of international airspace, such(a) as those over the oceans. such(a) airspace in respect of which a country is responsible under the International Civil Aviation Organization ICAO for operational domination is called a Flight Information Region FIR. For a coastal state, the FIR consists of the airspace above its land and sea territory plus all international airspace in respect of which ICAO has assigned responsibility to that state.

For instance, the United States helps air traffic sources services over a large part of the Pacific Ocean, even though the airspace is international.