Which of the following are systems within the UAS operational environment?

• A. Unmanned aircraft
• B. Control station
• C. Air traffic control facility
• D. All of the above

Answer: (D)

In the UAS operational environment, every flight involves more than just the aircraft itself. The unmanned aircraft is the air vehicle, the control station is where the operator sends commands and monitors telemetry, and the air traffic control facility provides airspace coordination and safety services to integrate the UAS with other air traffic. All three components are part of how a UAS mission is planned and executed, so the correct choice is the one that includes unmanned aircraft, the control station, and the ATC facility—essentially, all of the above.