The abbreviation GCA stands for what in aviation terminology?

The abbreviation GCA in aviation terminology stands for Ground Controlled Approach. This term refers to a system used in air traffic control where the aircraft is guided by ground-based controllers during its approach to landing, especially in low visibility conditions. The primary purpose is to assist pilots in safely landing by providing continuous instruction and information about the aircraft's position and altitude, allowing for a successful landing even when visual references are limited.

This system enhances safety and efficiency in airport operations, particularly in busy or challenging environments. The potential alternatives, while related to aviation or control systems, do not specifically denote the method of guidance utilized during the approach phase of landing as accurately as Ground Controlled Approach does.