National Airspace System (NAS)

airspace system

NASAMS (Norwegian / National Advanced Surface to Air Missile System)

National System for Geospatial-Intelligence (NSG)

Indian National Small Arms System

multi-national space-based imaging system (for surveillance) (MUSIS)

National Manoeuvre Air Defence System (NOMADS)

Air defense and Airspace Management Directorate (NATO)

airspace

airspace and traffic management

airspace control (AC)

airspace control area

airspace control authority

Airspace Control Means (ACMs)

Airspace Control Measure Request (ACMREQ)

Airspace Control Order (ACO)

airspace control plan

airspace management

Airspace Management Section (NATO IS)

Allied Joint Doctrine for Airspace Control (AJP-3.3.5)

prevention of incidents at sea and in the associated airspace

restricted area (airspace)

TRML-4D radar (нім. Telefunken Radar Mobil Luftraumüberwachung / Telefunken mobile airspace surveilance radar)

airspace coordinating measures (ACMs)

airspace control zone (DACZ)

high-density airspace control zone (HIDACZ)

sovereign airspace / air sovereignty

ensure safety in the airspace

enter hostile airspace

controlled airspace

advisory airspace

specified airspace

Agreement on Civil Aviation and Airspace Utilization