ground-controlled approach

or ground-con·trol approach

[ground-kuh n-trohld]
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. Abbreviation: GCA

Origin of ground-controlled approach

First recorded in 1940–45 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018