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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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The airspace control authority can delegate execution of airspace control to a component in the airspace control plan or ACO, using an airspace control sector for a large area or a high-density airspace control zone (HIDACZ) for a small area. 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. Neutralizing antibody distribution, with respect to the residence location (Table 2, Figure 1), showed the highest seroprevalence in zone A (28%), lower seroprevalences in zones B and C, and 5% in the control zone D ([chi square] = 14. |
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