clearance sector
clearance sector
[′klir·əns ‚sek·tər] (navigation)
In instrument-landing-system localizers, that section which extends from the front to the back course of sectors and within which the deviation indicator provides the required off-course indications.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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