EASA, EUROCONTROL Detail Electronic Conspicuity Use Cases

The European Union Aviation Safety Agency (EASA) and EUROCONTROL have published a foundational document detailing new use cases for Electronic Conspicuity (EC), a critical technology for mid-air collision prevention. This initiative addresses the urgent need to improve situational awareness in shared airspace as drone traffic increases. The new guidelines are central to EASA U-space regulations and represent a significant step in EUROCONTROL aviation safety efforts to create a unified, digitally visible environment for all airspace users, from commercial airliners to General Aviation (GA) aircraft and unmanned aerial systems (UAS).

The joint publication establishes a framework for how different aircraft can electronically 'see and be seen,' moving beyond the traditional reliance on visual separation. This is particularly vital in uncontrolled airspace and at low altitudes where GA aircraft and drones are increasingly likely to operate in close proximity. According to EASA, General Aviation airborne collisions in Europe result in an average of six fatal incidents and 13 fatalities per year. The implementation of widespread EC aims to drastically reduce these numbers by providing pilots and drone operators with real-time, accurate positional data of nearby air traffic.

Regulatory Mandates and New Standards

At the core of this initiative is the SERA.6005(c) regulation, part of the Standardised European Rules of the Air (SERA). This rule mandates that manned aircraft operating within designated U-space airspace must continuously make themselves electronically conspicuous to U-space Service Providers (USSPs). USSPs are entities responsible for managing drone traffic and ensuring safe separation from manned flights. Compliance with this regulation is essential for the safe integration of crewed and uncrewed aircraft.

To facilitate compliance for the GA community, EASA has developed a new, low-cost technical standard known as Automatic Dependent Surveillance - Light (ADS-L). This standard establishes an interoperable protocol using the SRD860 frequency band, allowing GA aircraft to meet U-space EC requirements without the need for expensive, heavy avionics. The goal is to democratize safety technology, a point emphasized by Florian Guillermet, Executive Director of EASA. "The ability for every pilot to have access to affordable, compatible systems to enhance their situational awareness will be a major step forward in safety in this vital sector of the aviation community," he stated.

Stakeholder and Industry Impact

The move toward mandatory EC has significant implications across the aviation sector. For GA pilots, it necessitates the equipage of affordable EC devices like those compliant with ADS-L to operate legally in U-space zones. For UAS operators, it is a critical enabler, providing the real-time telemetry of manned aircraft needed to conduct safe Beyond Visual Line of Sight (BVLOS) operations.

USSPs are now tasked with building the digital infrastructure required to ingest EC data from all manned aircraft and relay it effectively to their drone clients. This also creates a new market for avionics manufacturers to supply compliant, lightweight conspicuity devices to the tens of thousands of GA aircraft in Europe that are not yet equipped. In the United States, for comparison, an estimated 20,000 to 30,000 GA aircraft still operate at low altitudes without ADS-B Out equipage.

Historical Context and Technical Evolution

This European initiative builds on historical precedents that have successfully used technology to reduce collision risk. The implementation of the FAA's ADS-B Out mandate in January 2020 set a standard for electronic visibility in controlled US airspace. Earlier, the introduction of the Traffic Collision Avoidance System (TCAS) for commercial airliners in the 1990s proved the effectiveness of electronic collision avoidance. The current EC strategy adapts this proven concept for the unique challenges of low-altitude, mixed-use airspace.

However, EC systems differ fundamentally from traditional TCAS, as they are designed for a broader range of smaller aircraft and focus on enhancing situational awareness rather than providing active resolution advisories.

Electronic Conspicuity (EC) vs Traditional TCAS

Some aviation groups have raised concerns. General Aviation pilot advocacy organizations note that reliance on new standards could create barriers due to hardware costs and potential connectivity gaps. Meanwhile, aviation privacy advocates have pointed to issues surrounding the continuous public broadcasting of private flight data. The official EASA website provides further details on the regulatory framework.

What Comes Next

The publication of these use cases is a key step, but further work is planned. According to the timeline provided by EUROCONTROL, a joint assessment and validation work product on Electronic Conspicuity is expected to be delivered in late 2026. Looking further ahead, EASA and the International Telecommunications Union are expected to issue a recommendation for a single EU electronic conspicuity system for drones in 2027. This reflects a global push for better telemetry, echoed by FAA Administrator Bryan Bedford, who recently stated, "We need all aircraft to broadcast… to tighten up separation. We have to have a lot higher fidelity on where aircraft are."

Why This Matters

This joint EASA and EUROCONTROL initiative represents a fundamental shift in airspace management, moving from segregated operations to an integrated, digital-first environment. By establishing clear technical standards and use cases for Electronic Conspicuity, regulators are laying the groundwork for the safe coexistence of manned and unmanned aircraft. This development is not just a regulatory update; it is an essential enabler for the future of advanced air mobility and the entire drone economy.