Which of the following is NOT a primary component of a UAS?

The correct answer is based on the understanding of the typical components that make up a Unmanned Aircraft System (UAS). A UAS generally consists of three primary components: the drone (or air vehicle), the ground control station (which is used to control the drone), and the communication link that facilitates the transmission of commands and data between the ground control station and the drone.

The drone is the flying component that performs the intended missions, such as surveillance or data collection. The ground control station is where the operator manages the flight operations and navigates the drone. The communication link is crucial for maintaining control and relaying information, allowing real-time interaction between the drone and the operator.

In contrast, a passenger compartment is not a standard component of a UAS, as UAS are typically designed to operate without a human pilot onboard. Instead of transporting passengers, UAS are often used for various purposes, including aerial photography, inspection, and surveying, where a payload (such as cameras or sensors) is carried instead. Therefore, the passenger compartment does not fit within the principal framework of UAS components.