- controlled airspace
- An airspace of defined dimensions within which air traffic control service is provided to controlled flights (ICAO). The service to IFR (instrument flight rules) flights and to VFR (visual flight rules) flights is provided in accordance with the airspace classification. “Controlled airspace” is a generic term that covers ATS (air traffic service) airspace classes A, B, C, D, and E. Controlled airspace is subject to certain pilot qualifications, operating rules, and equipment requirements. For IFR operations in any class of controlled airspace, a pilot must file an IFR flight plan and receive an appropriate ATC (air traffic control) clearance. Standard IFR separation is provided to all aircraft operating under IFR in controlled airspace. Airspace designated as a continental control area, control area, control zone, terminal control area, or transition area, within which some or all aircraft may be subject to air traffic control areas, is a component of controlled airspace. Each Class B, Class C, and Class D airspace area designated for an airport contains at least one primary airport around which the airspace is designated.controlled airspaceControlled airspace within which only IFR (instrument flight rules) flights are permitted (ICAO). Airspace Class A is an instrument-restricted controlled airspace.controlled airspaceControlled airspace within which only IFR (instrument flight rules) and controlled VFR (visual flight rules) flights are permitted (ICAO).controlled airspaceControlled airspace within which both IFR (instrument flight rules) and VFR (visual flight rules) flights are permitted, but VFR flights are not subject to control (ICAO).
Aviation dictionary. 2014.
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airspace Class D — Airspace in which both IFR (instrument flight rules) and VFR (visual flight rules) flights are permitted and are subject to air traffic control service in this airspace. IFR flights are separated from other IFR flights and receive traffic… … Aviation dictionary
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airspace — noun ADJECTIVE ▪ controlled, restricted ▪ international, national ▪ enemy ▪ British, French, US … Collocations dictionary