What are the three main types of ATC services?

• A. Ground control, flight planning, and departure control
• B. Tower control, ground control, and approach control
• C. Departure control, arrival control, and tower control
• D. En-route control, ground control, and terminal control

Answer: (B)

The three main types of ATC services encompass different phases of air traffic management. Tower control is responsible for managing aircraft movements on the runway and within the immediate vicinity of the airport, ensuring safe takeoffs and landings. Ground control oversees the movement of aircraft on the ground, facilitating safe taxiing and preventing collisions. Approach control manages aircraft that are approaching the airport, coordinating their descent and preparing them for landing. This combination of tower, ground, and approach control services is essential for maintaining safety and efficiency in both airport operations and the airspace immediately surrounding an airport.

Each of the other options contains services that, while related to air traffic management, do not accurately encapsulate the three primary types of ATC services. The concepts of departure control, arrival control, and en-route control are often part of broader handling by approach or en-route controllers but do not represent the core framework of ATC services as effectively as the selected answer. Ground control is distinct from departure and arrival controls, as it focuses solely on the movement of aircraft when they are not airborne.