How many airborne aircraft can STARS track simultaneously within a terminal area?

• A. Up to 1350
• B. Up to 1200
• C. Up to 1000
• D. Up to 1500

Answer: (A)

STARS can maintain up to 1,350 airborne aircraft simultaneously within a terminal area. This limit comes from how the system allocates processing and display resources to handle each active track—including position, velocity, altitude, and associated alerts—so controllers get timely, reliable updates. When traffic nears this capacity, STARS may reduce update rates or prune less critical tracks to preserve core functionality and safety. The 1,350 figure is the defined maximum for terminal-area tracking under standard configurations.