SORA — short for Specific Operations Risk Assessment — is a structured, internationally recognized method for evaluating the risk of a drone operation that falls outside the simple, pre-authorized rules. Instead of a blanket yes/no, SORA walks an operation through a defined risk-assessment process and produces a set of operational mitigations and safety objectives that make the flight acceptable to the regulator.
Why SORA exists
Most routine commercial drone work fits inside standard rules — visual line of sight, away from people, below 400 ft. But some operations carry more risk: beyond visual line of sight (BVLOS), flight near people or infrastructure, or operations in complex airspace. SORA is the framework that lets those operations be assessed individually and authorized with proportionate mitigations, rather than banned outright or waved through.
How a SORA works, in plain terms
SORA evaluates two kinds of risk and the mitigations that bring each down to an acceptable level:
- Ground risk — the risk to people on the ground if the aircraft comes down. Driven by aircraft size and energy, population density under the flight, and mitigations like operating over a controlled or sparsely populated area.
- Air risk — the risk of colliding with other aircraft. Driven by the airspace class and traffic density, mitigated by altitude limits, deconfliction procedures and coordination.
The assessment combines these into a final assurance level that sets how robust the operator's procedures, equipment and training must be. The output is not just an approval — it is a documented operating envelope with specific conditions.
Where SORA applies in Canada
In Canada, the SORA methodology underpins Transport Canada's framework for complex RPAS operations — including the Level 1 Complex Operations pathway that is replacing the older Special Flight Operations Certificate (SFOC) process for most medium-risk BVLOS work. Operators pursuing pipeline patrol, transmission-corridor inspection or large-area survey beyond visual line of sight work through a SORA-based assessment to gain authorization.
What a SORA is not
- It is not required for standard visual-line-of-sight work that already fits the basic or advanced operating rules.
- It is not a one-time certificate — it documents a specific operation or class of operations, and a materially different operation needs its own assessment.
- It is not a guarantee of approval — if the residual risk cannot be mitigated to an acceptable level, the operation is not authorized.
How UAV Imaging uses SORA
For routine visual-line-of-sight inspection and mapping, no SORA is needed and none is produced. For higher-risk operations — work near energized infrastructure, complex-airspace flights, and the BVLOS corridor work behind UAV Imaging's active Level 1 Complex Operations application — a Site-Specific Operations Risk Assessment is prepared, documents the operating envelope and mitigations, and is provided to the client as part of the project record. It is a planning and compliance tool, not a sales upsell.
Related
- BVLOS (Beyond Visual Line of Sight)
- Remote ID
- 2026 Alberta RPAS regulation updates
- All glossary terms