instrument landing system

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instrument landing system

A system of radio navigation intended to assist aircraft in landing which provides lateral and vertical guidance, which may include indications of distance from the optimum point of landing. Also called ILS.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
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The pilot said that he was concerned about arriving without help from an instrument-landing system. Controlling the descent, he said, ''is very stressful.''

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