Canada Moves Toward Remote Air Traffic Control as Digital Tower Technology Takes Flight in Kingston

Canada is entering a new era in air traffic control with the launch of its first digital aerodrome control tower in Kingston, Ontario, opening the possibility that aircraft at airports could eventually be directed by controllers working hundreds of kilometres away.

The project, led by Nav Canada, is being developed as the aviation industry faces continuing staffing challenges and growing pressure to modernize aging infrastructure. If the technology proves successful, one centralized facility could eventually allow controllers to manage operations at 10 to 15 airports across eastern Canada.

The Kingston project represents a major change from the traditional model, in which controllers work inside airport towers and monitor aircraft through large windows.

Instead, controllers at the new facility will work from a remote control centre equipped with large screens, high definition cameras and advanced monitoring systems that provide a 360 degree view of airport operations.

Kingston Becomes Canada’s Digital Tower Test Site

The newly completed digital tower at Kingston Airport is the first of its kind in Canada. Rather than housing controllers inside the tower itself, the structure is equipped with cameras that continuously capture activity around the airport.

A rotating camera provides a broad view, while additional cameras can pan, tilt and zoom to examine aircraft, vehicles, wildlife and other potential hazards.

The images are transmitted to a control centre at the airport, where trained air traffic personnel can monitor and communicate with aircraft.

The system is designed to provide controllers with information that goes beyond what they can see from a conventional tower.

Among the technology’s features is an infrared viewing option that can be particularly useful during darkness and periods of poor visibility. Moving objects can also be highlighted and tracked, allowing controllers to examine potential risks more closely.

Nav Canada says the technology could eventually give controllers a much greater range of visibility than traditional binoculars.

Hamilton Could Become the Next Major Step

The next stage of the project is expected to involve Hamilton, Ontario.

Under the proposed arrangement, aircraft at Hamilton would eventually be monitored by controllers based at the Kingston facility, approximately 300 kilometres away.

If the model is expanded, controllers working from Kingston could potentially manage operations at numerous airports without physically being present at each location.

Nav Canada believes this could provide greater flexibility when dealing with staffing shortages. Instead of requiring every airport to maintain a separate pool of controllers, a centralized workforce could provide backup when employees are absent or when traffic levels change.

The organization remains approximately 200 controllers below its staffing target, although it says recruitment and training efforts are helping to close the gap.

Centralizing operations could also make recruitment easier by allowing qualified controllers to work from locations where they want to live rather than requiring them to relocate to smaller communities with airport control towers.

Staffing Shortages Driving Modernization

The air traffic control industry has faced significant staffing pressure since the COVID 19 pandemic disrupted aviation worldwide.

Shortages have contributed to delays and cancellations in several countries, placing additional pressure on aviation authorities to find ways of maintaining reliable services.

Nav Canada says remote technology could help address some of those challenges without eliminating the human role in air traffic management.

The system is not intended to remove controllers from the decision making process. Instead, technology is being used to provide them with additional information and allow teams of controllers to potentially serve several locations.

Artificial intelligence is also being incorporated into some of the monitoring capabilities, including systems designed to identify aircraft, weather conditions and possible hazards.

Nav Canada and its technology partners emphasize that human controllers will remain responsible for decisions involving aircraft movement.

Air Traffic Controllers’ Union Raises Concerns

The Canadian Air Traffic Control Association is closely watching the Kingston project and has expressed concerns about the transition.

Union president Nick von Schoenberg has acknowledged that remote technology could potentially provide a level of service comparable to conventional towers, but he questions whether replacing existing systems will necessarily make aviation safer.

One of the union’s biggest concerns is the possibility of losing experienced controllers during a period when the industry can least afford additional departures.

A large number of Canada’s air traffic controllers are approaching retirement age, creating what the union describes as a demographic challenge.

Even a relatively small percentage of additional departures could place further pressure on an already stretched workforce.

The union is also concerned about what could happen if the technology experiences a major failure.

Traditional towers allow controllers to see and hear their immediate surroundings directly. Remote facilities depend on cameras, communications networks, electricity and other technological systems.

For the system to be successful, those components must remain reliable under all conditions.

Building Multiple Layers of Backup

Nav Canada says redundancy is central to the design.

The digital towers will have backup electricity systems, additional cameras and duplicate remote control stations. If one camera becomes damaged or blocked, another can provide an alternative view.

The organization also recognizes that telecommunications infrastructure represents one of the biggest challenges to expanding remote air traffic control across Canada.

A reliable connection is essential because controllers must receive continuous information from remote airports.

Nav Canada says future installations should ideally have two independent telecommunications providers to ensure that the loss of one network does not interrupt operations.

That requirement could make remote control more difficult in isolated communities where telecommunications infrastructure remains limited.

Technology Already Used Around the World

Canada is not the first country to experiment with remote air traffic control.

Similar systems are already operating in more than a dozen countries, including the United Kingdom and Norway.

London City Airport has used remote technology, while Norway has developed the system as a way of maintaining and expanding aviation services in communities where recruiting specialized workers can be difficult.

The Norwegian experience is particularly important for Canada because both countries have large geographic areas and remote communities.

Instead of requiring a small airport to maintain a permanent team of controllers locally, specialists can work together from a larger centre.

A centralized workplace can also provide greater opportunities for teamwork, training and backup support.

Aviation experts believe remote towers are likely to become increasingly common during the next decade.

The technology does not fundamentally change the responsibility of air traffic controllers, but instead provides them with a different set of tools for managing aircraft.

Traditional Towers Will Not Disappear Overnight

Despite the excitement surrounding the Kingston project, Nav Canada says a widespread transformation will take time.

Many Canadian airport control towers were constructed during the 1950s, 1960s and 1970s and now require replacement or significant renovation.

For Nav Canada, digital technology offers another option when those facilities eventually reach the end of their useful lives.

Rather than constructing a new conventional tower at every airport, a remote digital facility could potentially be installed more quickly and at lower cost.

However, the organization says expanding the system geographically remains a longer term objective.

Before that happens, regulators and aviation authorities must be satisfied that remote control can provide safe and reliable service.

A Year of Testing Ahead

The Kingston project will undergo extensive testing before controllers begin managing operations remotely.

Starting this fall, a shadow team of controllers is expected to spend a year working with the remote stations while the system is evaluated.

The testing period will allow Nav Canada to identify technical problems, assess controller workload and examine how effectively the system performs under different weather and traffic conditions.

Regulatory approval will also be required before Hamilton transitions to remote control.

The process will therefore involve more than simply installing cameras and screens. The technology, communications systems, human factors and emergency procedures will all have to demonstrate that they can meet Canada’s aviation safety requirements.

A Potential Turning Point for Canadian Aviation

The Kingston digital tower could ultimately become a model for the future of air traffic control across Canada.

If successful, the system could allow highly trained controllers to manage multiple airports from centralized facilities, helping address staffing shortages while reducing the need to build and maintain traditional towers at every location.

For supporters, the technology represents modernization and greater flexibility. For the union, it represents a significant change that must be introduced carefully to avoid losing experienced workers and creating new safety risks.

The coming year of testing will be crucial.

Canada’s aviation system has relied on conventional control towers for generations. Kingston is now providing a glimpse of what could come next, with cameras replacing windows, digital screens replacing traditional tower views and controllers potentially guiding aircraft from cities far away from the airports they serve.

If the technology delivers the safety, reliability and efficiency promised by its developers, the idea of controlling planes from another city could eventually become a normal part of Canadian aviation.

Courtesy: CBC