Core Points - The successful activation of the backup control tower at Shenzhen Airport marks a significant milestone in enhancing air traffic management capabilities [1][4] - The backup tower was operationally switched within 3 minutes, ensuring a flight operation normal rate of 94% and a peak departure normal rate of 98.6% on the same day [1][4] - The upgrade of the Shenzhen air traffic control station is aimed at supporting the upcoming third runway, scheduled to be operational by the end of 2025 [4][5] Group 1 - The backup control tower was constructed to ensure the seamless transition and safety of air traffic operations during the upgrade of the main control tower [4][5] - A "shadow operation" mode was implemented prior to the switch, allowing controllers to familiarize themselves with the new equipment and environment [4] - Safety assessments and training measures were put in place to manage risks associated with the transition to the backup tower [4][5] Group 2 - The new air traffic control systems will include two highly integrated automated systems and a complete overhaul of key operational systems [4] - The redesign of control positions aims to enhance operational efficiency and safety during the transition period [4][5] - The backup tower's activation allows for a sufficient adaptation period for controllers to prepare for the third runway's operational demands [5]