left-right indicator


Also found in: Acronyms.

course correction

course correction
i. Allowances made for deviations, variation, and drift.
ii. The alteration of a course to get back on track. course deviation indicator (CDI) An indicator used with VOR (very high frequency omnidirectional radio-range), LORAN (long-range navigation), GPS (global positioning system), or other area navigation systems to indicate the direction and relative amount of deviation from the desired course. Also called a left-right indicator.
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