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.

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.
References in periodicals archive ?
Chelninskii forest district (forest and steppe zone of 9539 hectares, the forest and steppe region of the European part of the Russian Federation) and the landscape zone of the city park "Grenada" were chosen as conventional control zones (CCZ).
The alcohol control zone in Wrexham town centre has been an outstanding success in reducing anti-social behaviour by people of all ages who drink openly in the streets.
Flintshire currently has alcohol control zones at Flint Castle, Wepre Park, two areas in Mynydd Isa near Mold, Greenfield Valley Heritage Park, Maes Bodlonfa and Bailey Hill in Mold and the Sandycroft playing fields.
Cold calling control zones reduce crime, and help to protect the most vulnerable in our society who are more at risk of being conned out of money or possessions.
Animals within the control zone may not be moved out of it, and visitors to farms within the zone must wash as they enter and leave the premises.
Speaking outside Honeychild Manor Farm, Mr Furnival said, "I understand that the setting up of a temporary control zone is a normal response and therefore I fully support this, pending the results of the tests.
The theme park, incorporating Chessington Zoo, lies at the centre of the newly-imposed temporary control zone where there was an outbreak earlier this month.
The Huddersfield alcohol control zone covers the area within the A62 ring road, plus Folly Hall and Chapel Hill.
But she said it might be April 2007 before the markings are introduced and the area is brought into the well-enforced Central Area Park Control Zone.
The council's ruling cabinet has designated much of Swansea's city centre as an alcohol control zone where police can ban street drinking on the spot.
A three-kilometre control zone was in place around premises near Petersfield, Hampshire, as a precautionary measure, a spokesman said.
Stephen Furnival, whose arable farm is at the centre of the scare in Kent, said he "fully supported" the setting up of the control zone.