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ground-controlled approach

[ground-kuh n-trohld] /ˈgraʊnd kənˌtroʊld/
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.
Also, ground-control approach.
Origin
1940-1945
1940-45
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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