<\/p>\nhad previously reported<\/p>\n
<\/a> that the next-generation air navigation system will be rolled out in the second half of the 2020s.<\/p>\n
The tool will provide a countdown of the exact time gap required to prevent collisions and manage wake turbulence \u2014 the air disturbances generated by the preceding aircraft \u2013 between two aircraft that depart consecutively. <\/p>\n
It will compute the required time needed to maintain a minimum vertical and horizontal distance between two aircraft, right as the first aircraft of the two takes off from the runway. <\/p>\n
A \u201crundown clock\u201d \u2013 or the visual countdown \u2013 will be shown to the air traffic controllers in the control tower, said Mr Vincent Hwa, director of air traffic services at CAAS.<\/p>\n
The air traffic controllers can then allow the second aircraft to take off once the countdown reaches zero, providing them with \u201csafety assurance\u201d and allowing them to authorise aircraft to take off at the \u201cmost optimal moment\u201d, he added.<\/p>\n
This will maximise capacity on the runway and in the skies, said Mr Hwa.<\/p>\n
He also noted that the tool will improve the safety and efficiency of air traffic control operations, while easing the cognitive task of processing information for air traffic controllers.<\/p>\n
It is expected to improve the capacity of Changi Airport\u2019s runways and help air traffic controllers do their work better, after a 2020 study showed that controllers in Singapore may apply slightly longer time gaps than the minimum safety duration required, and that safety durations set for various aircraft differ across controllers.<\/p>\n
Speaking on the sidelines of the Singapore Airshow 2026 earlier in February, Ms Angela Ng, director of aviation industry at CAAS, said air traffic controllers around the world currently rely primarily on human cognition to get the safety distance between two aircraft right. <\/p>\n
At present, in some airports worldwide, controllers evaluate distances between aircraft as shown on radar screens and base their calculations on the size, wingspan and weight of the aircraft. <\/p>\n
Mr Hwa noted that there are 49 different permutations for the minimum distance between two aircraft, based on the type of aircraft. The time required to maintain this minimum distance ranges from 60 to 180 seconds.<\/p>\n
For example, the minimum time gap for a wide-body Boeing B777 jet in front and a narrow-body Airbus A320 plane following behind is 100 seconds. On the other hand, the minimum duration for a larger wide-body Airbus A380 plane in front and a narrow-body Boeing B737-300 jet following behind is 160 seconds. <\/p>\n
After taking in lessons learnt from the prototype, CAAS will incorporate the tool, with additional artificial intelligence capabilities, into the new air navigation system that is currently in development, said Mr Hwa. <\/p>\n
Also earlier in February, Mr Simon Hocquard, director-general of the Civil Air Navigation Services Organisation, told reporters at the Changi Aviation Summit that automation of air navigation services is key to managing the surge in air traffic at airports.<\/p>\n
He added that at present, air navigation operates in a \u201cvery tactical environment\u201d where controllers have to talk to pilots to tell them what to do and where to go on a \u201creactionary\u201d basis. <\/p>\n
But if this process becomes more strategic and is accurately planned ahead of time through automation and technology, the capacity of the system can be further improved. <\/p>\n
To achieve this, Mr Hocquard said every country would need to be coordinated in their investments in technology to enable the growth of the aviation ecosystem. <\/p>\n
Editor\u2019s note:<\/b> This story has been amended following a clarification from CAAS that the tool does not have AI capabilities now. These capabilities will be introduced as part of the next-generation air navigation system.<\/p>\n<\/div>\n
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