control area


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control area

[kən′trōl ‚er·ē·ə]
(navigation)
An area over which air-traffic control is exercised by a ground-located traffic-control center.

control area

A building (or portion thereof) in which exempted quantities of hazardous materials may be dispensed, handled, stored, or used.

control area

control areaclick for a larger image
A controlled airspace extending upward from a specified limit above the earth (ICAO). The delineation of the control areas, including airways and terminal control areas, should encompass sufficient airspace to contain the flight paths of those IFR (instrument flight rules) flights to which it is desired to provide air traffic control services deemed appropriate after taking into account the capabilities of the available navigational aids in the area. In a control area, other than that formed by a system of airways, a system of routes may be established for easy provision of air traffic control. While it is not essential to establish a uniform lower limit of control areas, it should be not less than 700 ft (200 m) above the ground or water. This limit should be such, when practical, that it provides separation for VFR (visual flight rules) flights below the control area. When this lower limit is above 3000 ft (900 m) MSL (mean sea level), it should coincide with a VFR (visual flying rules) cruising level. An upper limit of a control area is established when either the air traffic control service is not planned to be provided above this upper limit; or the control area is situated below an upper control area. In this case, the upper limit should coincide with the lower limit of the upper control area; it should coincide with a VFR cruising level.
References in periodicals archive ?
Santo Tomas Mayor John Sambo earlier appealed for a review of the restrictions in the town outside the 7-km control area.
The mice of third and forth groups were treated intraperitoneally at the same time points by 150 [micro]l pollen extracts of control area and polluted area containing 20 [micro]g protein adsorbed to 2mg of Alum respectively [3,5].
Kansai Electric's in-house rules require its employees or subcontractors to seek permission to take out anything from buildings in radiation control areas.
Because of a concern about potential selection bias in our response, two buildings of similar housing stock were targeted in the exposed area and in the control area for more intensive outreach.
Control Area Limits on Chemicals and Gases in a Sample Four-Level Building Material type Floor 1 Floor 2 Combustible liquid Class II 480 gal 360 gal Combustible liquid Class IIIA 1320 gal 990 gal Combustible liquid Class IIIB not limited not limited Cryogenics 90 gal 67.
Along the urban periphery we selected six bait and six control areas of 1 [km.
The control area was chosen to be socio-economically similar, geographically close, but physically outside the Superfund and lead mining area.
This location was between two existing disease control areas.
KEY SPECS: When grasped, the user's fingers naturally rest in the control area.
Delivering wood fuel in a Smoke Control Area is also an offence.
One is in the central control area, and the other is in the booking control area.
This means re-directing all tenants and guests through a control area before admittance is authorized, using stanchions, partitions and barriers to direct traffic.

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