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Most tactical drone deployments are constrained to Visual Line of Sight — the operator must keep the aircraft visible at all times. That constraint limits operational range to roughly 500 metres, undermining the primary advantage of UAV surveillance. Beyond Visual Line of Sight (BVLOS) operations remove that constraint, unlocking the full 30 km range that platforms like the Vigil 6 are capable of.
This is what BVLOS requires, what EU regulations say, and how to build a programme that actually works.
VLOS — Visual Line of Sight — means the remote pilot maintains unaided visual contact with the drone throughout the flight. In practice, this limits useful range to 300–500 metres in good visibility conditions. Beyond that distance, the drone is too small to track reliably, and the pilot loses the situational awareness needed to avoid obstacles and other aircraft.
BVLOS operations extend beyond this limit. The pilot controls the drone using only instruments and onboard camera feeds — the same way an aircraft pilot uses instruments in cloud. The drone flies further than the eye can see, guided by GPS, telemetry data, and real-time video.
For government operators, the difference is decisive. A 500m range drone is a close-range observation tool. A 30km range BVLOS drone is a persistent surveillance asset capable of covering entire border sectors, industrial zones, or urban perimeters from a single launch point.
BVLOS operations in the EU are regulated under the EASA (European Union Aviation Safety Agency) Drone Regulation framework, implemented across all EU member states since January 2021. The key points for government operators:
Most government tactical UAV operations fall under the Specific category. Obtaining a BVLOS authorisation requires submitting a SORA that documents the operational volume, hazard analysis, mitigations, and the operator's competency management system.
While EASA provides the framework, each member state's NCA manages authorisation. Processing times vary — Bulgaria's BGCA, Germany's LBA, France's DSAC, and the UK's CAA (post-Brexit) all have different procedures and timelines. Government operators typically receive faster processing due to their regulatory relationship with the NCA.
Law enforcement and defence operators may also qualify for derogations under Article 2(3) of the EASA Basic Regulation, which excludes certain State aircraft operations from standard civil aviation requirements. Legal advice from an aviation law specialist is recommended for this pathway.
BVLOS authorisation requires demonstrating that the operation can be conducted safely without visual contact. This translates into specific technical requirements for the platform and ground infrastructure:
The Vigil 6's 30 km transmission range is not a theoretical specification — it is the operational range at which the platform was designed to function. This range is achieved through a self-hosted 4G/LTE communications architecture that operates independently of civilian network coverage.
For BVLOS operations, this means:
For operators building a BVLOS programme, the communications architecture is often the single hardest technical problem to solve. The Vigil 6 ships with that architecture as a standard inclusion. See the full technical specifications →
OF-PRO works with government operators to specify the right platform configuration for BVLOS authorisation — including SORA documentation support, communications architecture design, and pilot training resources. Contact us to discuss your programme.
Discuss Your BVLOS Programme