By: Dan Juhlin, Autonomy Global Ambassador – Canada
The winds of change are blowing in Canadian skies. While Canada’s fleet of approximately 31,000 active general aviation (GA) aircraft grapples with the cost and complexity of NAV Canada’s new phased mandate for Automatic Dependent Surveillance-Broadcast (ADS-B) Out technology, the growing army of over 126,000 registered drones (outnumbering GA planes four to one) will likely utilize this very same infrastructure. The modernization of Canada’s air traffic system has shifted focus from solely tracking manned aircraft to increasingly enabling and regulating the explosive growth of unmanned and emerging Advanced Air Mobility (AAM) vehicles. NAV Canada’s new surveillance policy now stands at a critical juncture as it undertakes a comprehensive “Level of Service” study to chart the future of the country’s lower airspace.
The Current Mandate: A Phased Approach
The regulatory updates began in August 2023 when ADS-B Out (the broadcast of an aircraft’s position) became mandatory in Class A airspace (above 18,000 feet). In May 2024, this mandate extended to Class B airspace. These initial phases primarily affected commercial and higher-performance aviation.
The next, and most contentious, step involves the expansion to Class C, D, and E controlled airspace, generally the domains of general aviation (GA) and regional airlines. Originally targeted for 2026, NAV Canada has pushed this timeline back to “no sooner than 2028.” It is conducting a comprehensive “Level of Service” study to assess the operational needs, costs and technical requirements for this next phase, in acknowledgement of the potentially significant impact this expansion will have on a broader segment of the aviation community.
The Stakeholder Divide: Drones vs. Propellers
The mandate has drawn contrasting reactions from different sectors of Canadian aviation.
The Drone Industry (Pro)
Many operators of Remotely Piloted Aircraft Systems (RPAS) view Canada’s space-based ADS-B network as mission critical. NAV Canada explicitly states the system will support “RPAS detect-and-avoid capabilities,” which remain essential to integrate drones into controlled airspace and enable complex operations like beyond visual line-of-sight (BVLOS) flights. The drone industry largely views the mandate as a necessary step to unlock the industry’s commercial potential and operational scale. To date, only a handful of drones are equipped with ADS-B because, in general, it is not currently legal to have ADS-B out on a drone in Canada. Exceptions include those participating in the NAV Canada Universal Traffic Management (UTM) Trials Phase II such as the custom Censys Technologies Sentaero 4 fielded by AirMarket.
General Aviation (Historically Con, Softening)
The Canadian Owners and Pilots Association (COPA) has been a vocal critic of the new mandate. Core objections have centered on three points:
- High Cost: Traditional ADS-B Out installations with the required antenna diversity can exceed $20,000, a prohibitive sum for many private owners.
- Limited Pilot Benefit: Unlike the equivalent U.S. rule, Canada’s mandate is for surveillance (ADS-B Out) only. It does not require the complementary “ADS-B In” capability that delivers traffic and weather information to the cockpit which offers a direct safety benefit to the pilot.
- Cross-Border Friction: Canada is transitioning to a 1090 MHz Extended Squitter (1090ES) only ADS-B surveillance system, which differs from the U.S. system that allows both 1090ES and 978 MHz Universal Access Transceiver (UAT). Because Canada utilizes satellite-based tracking (Aireon), the mandate requires 1090ES with antenna diversity (top and bottom antennas) for compliance in specified airspace. As many GA aircraft in the US lean toward the UAT system, this leaves many U.S. GA aircraft non-compliant, complicating north-south flight.
However, COPA’s stance seems to be evolving. The primary catalyst for what some may describe as the organization’s softening to the new mandate revolves around the emergence of lower-cost, certified solutions. One such example, the uAvionix tailBeaconX, is priced around US$2,500. This single-unit device also meets the Canadian antenna diversity requirement in a relatively simple installation. This technology, which has lowered the barrier to entry to a fraction of the traditional costs, has also changed the conversation from outright opposition to negotiation over the specifics of the rule. It directly addresses the most potent objection from the GA community by providing affordable compliance.
Additive to this, the success of commercial Low Earth Orbit (LEO) satellite constellations (like the communications-focused Starlink) has also validated the underlying technology of the Aireon network that NAV Canada’s mandate relies upon.
Weighing the Path Forward: Pros and Cons
The primary argument in support of the ADS-B Out mandate relates to enhanced safety and efficiency. This technology provides air traffic controllers with more precise, real-time aircraft tracking across Canada’s entire sovereign airspace, including remote and oceanic areas. It also provides a future-proof foundation, as it establishes a modern surveillance backbone that can support next-generation air traffic management and the integration of new users like drones. Finally, some believe it supports operational resilience as space-based surveillance proves less susceptible to terrain limitations and infrastructure outages than traditional ground radar.
On the other hand, the cost burden for GA will continue to be an ongoing talking point. Even with newer, cheaper options, compliance represents a significant, mandated investment for aircraft owners with no direct “ADSB-In” service benefit. Critics, including COPA, continue to question whether the dual-antenna requirement is technically necessary for all classes of GA aircraft. They argue that NAV Canada has not fully justified it. Another detractor is that the surveillance-only approach falls short of providing Canadian pilots the direct situational awareness tools that have become a valued part of flying in U.S. airspace. This is not to say that operators could not simply add ADS-B in (through Starlink) – they could. For unknown reasons, NAV Canada has chosen not to require it. Finally, as mentioned, the 1090ES-only stance creates a bit of cross-border complexity with the U.S. system. It could potentially complicate equipment choices and increase costs for aircraft that frequently cross the border.
The Road Ahead
With the Level of Service study underway and the deadline for lower airspace now set for 2028 at the earliest, NAV Canada has opened a crucial window for evaluation. This time allows for further technological maturation, deeper consultation with stakeholders and a more measured assessment of the ground infrastructure needed to support the space-based network.
The conversation has moved from “if” ADS-B is coming to “how” it will be implemented. The softening of COPA’s opposition to this new technology marks a significant development and suggests a path through which the mandate’s safety and efficiency goals can be met without imposing an untenable financial burden on GA. More importantly, this conversation signals that drones are no longer considered interlopers in Canadian airspace but legitimate users themselves. This idea is crucial to the conversation on airspace allocation. A healthy compromise here could see drones gaining their own airspace and all aircraft being required to either apply ADS-B, or some other form of electronic conspicuity, or lose right-of-way in class G airspace below 1000 feet AGL. The coming years will determine if this balance can be struck. The final answer to the crucial “see and avoid” question will set the stage for the future of Canadian flight for both traditional pilots and the new generation of complex-level drone operators.