control zone


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control zone

[kən′trōl ‚zōn]
(navigation)
An airspace of defined dimensions extended upward from the surface to include one or more airports, and within which rules additional to those governing flight in control areas apply for the protection of traffic. Also known as air-traffic control zone.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

control zone

A controlled airspace extending upward from the surface of the earth to a specified upper limit (ICAO). The lateral limits of a controlled zone extend to at least 5 NM (9.3 km) from the center of the associated aerodrome(s) in the directions from which approaches may be made. The lateral limits of a controlled zone encompass at least those portions of the airspace that are not within control areas containing the path of IFR (instrument flight rules) flights arriving at and departing from aerodromes to be used in IMC (instrument meteorological conditions). Control zones' boundaries are shown as dotted lines on aeronautical charts.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
A model is defined for each control zone of the furnace and for each fuel.
While the control zones were small, they could have been even more discrete, suggesting the potential for even higher energy savings.
In June the plants growing in the plantations along highways and in sanitary protective zones had significantly higher indices than those growing in conventional control zones (at 0.06-0.45 and 0.47-0.83 mg/g of dry substance respectively if SSD05=0.02).
In June 2013, Texas Eastern filed a request for a tariff revision to establish a second control zone west of Berne to control the quality of gas now flowing west on its system.
A control zone of 1.9-miles, in which poultry must be housed and kept away from wild birds, has been set up around the premises.
Animal Health have also sent information letters and leaflets to all farmers within the previous Bluetongue Control Zone and Protection Zones and have sent voicemails to livestock keepers within these zones when the disease was confirmed as circulating.
A 3km control zone is in place near the village of Rogate.
All movement of susceptible animals in and out of the control zone was banned, in scenes similar to those seen around farms and cattle markets across the country in recent weeks.
Ahead of the fixture, clerk of the course, Barney Clifford, said: "We are within the ten-kilometre temporary control zone so we obviously will carry out the disinfectant procedures for vehicles.
A 3km temporary control zone was set up around a farm in the Romney Marsh area of Kent, after a farmer raised concerns that his cattle were displaying symptoms.
Upgrades include the reconfiguration of the fare control zone, reconstruction of an existing street entrance, expansion of the mezzanine area and the addition of three elevators, making the station fully accessible to the disabled.
Antigen-bound particles are immobilized at the detection zone by specific antibodies, and some of the excess particles are immobilized at the internal control zone by anti-immunoglobulin antibodies.