ground-controlled approach

or ground-con·trol approach

[ ground-kuh n-trohld ]
/ ˈgraʊnd kənˌtroʊld /

noun Aeronautics.

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

Origin of ground-controlled approach

First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019