Glossary of Terms

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Air defence identification zone. Special designated airspace of defined dimensions within which aircraft are required to
comply with special identification and/or reporting procedures additional to those related to the provision of air traffic
services (ATS).


Admission. The permission granted to a person to enter a State by the public authorities of that State in accordance with its
national laws.

ADS Agreement

“ADS Agreement” means an ADS reporting plan which establishes the conditions of ADS
data reporting

Advisory airspace

“advisory airspace” means advisory areas or advisory routes

Advisory area

“advisory area” means an area designated by the appropriate ATS authority within a flight
information region where an Air Traffic Advisory Service is available


Aerodrome. A defined area on land or water (including any buildings, installations and equipment) intended to be used either
wholly or in part for the arrival, departure and surface movement of aircraft.

Aerodrome climatological summary

Aerodrome climatological summary. Concise summary of specified meteorological elements at an aerodrome, based on
statistical data

Aerodrome control tower

Aerodrome control tower. A unit established to provide air traffic control service to aerodrome traffic

Aerodrome elevation

Aerodrome elevation. The elevation of the highest point of the landing area.

Aerodrome identification sign

Aerodrome identification sign. A sign placed on an aerodrome to aid in identifying the aerodrome from the air.

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