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ground-controlled approach

American  
[ground-kuhn-trohld] / ˈgraʊnd kənˌtroʊld /
Or ground-control approach

noun

Aeronautics.

  1. a system in which an observer interprets radar observations of the position of an aircraft and transmits continuous instructions to its pilot for landing. GCA

Etymology

Origin of ground-controlled approach

First recorded in 1940–45

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.