Instrument Rating Checkride Practice Test

What does ADS-B stand for?

1. Automatic Direct Surveillance-Broadcast

2. Automatic Dependent Surveillance-Broadcast

3. Aerial Dependent Surveillance-Broadcast

4. Analog Direct Surveillance-Broadcast

The correct answer is: Automatic Dependent Surveillance-Broadcast

ADS-B stands for Automatic Dependent Surveillance-Broadcast. This system is a key technology in modern air traffic management. It enhances situational awareness for both pilots and air traffic controllers by automatically providing accurate position information derived from a satellite navigation system, such as GPS. The term "Automatic" refers to the system's ability to transmit information without pilot input once it is properly configured. "Dependent" indicates that the system relies on data from satellite-based navigation. Finally, "Surveillance-Broadcast" describes the method of sharing information, where aircraft periodically broadcast their position and other relevant data to ground stations and other aircraft in the vicinity. Understanding ADS-B is critical because it plays a significant role in improving safety and efficiency in airspace management, especially in crowded environments. It allows for better tracking of aircraft where traditional radar coverage may be limited, thereby facilitating separation and traffic management.