Global RPAS specific operation risk assessment guidelines revised

March 24th, 2019, Published in Articles: EE Publishers, Articles: PositionIT

The Joint Authorities for Rulemaking on Unmanned Systems (JARUS) has updated its guidelines on Specific Operations Risk Assessment (SORA) for RPAS, which it published online at

JARUS Working Group 6 (Safety and Risk Management) along with Working Group 4 (Detect and Avoid) have been collaborating to consolidate the guidelines, taking into account the internal and external JARUS consultation processes with contributions from all over the world.

The guidelines recommend a risk assessment methodology to establish a sufficient level of confidence that a specific operation can be conducted safely. An executive summary has been introduced to present in two pages the structure of the methodology.

The second issue of the SORA main body provides a revised and streamlined approach to the risk assessment methodology which is supported by four new annexes:

  • Annex B: Integrity and assurance levels for the mitigations used to reduce the intrinsic Ground Risk Classes
  • Annex C: Strategic Mitigation Collision Risk Assessment
  • Annex D: Tactical Mitigations Collision Risk Assessment
  • Annex E: Integrity and assurance levels for the Operational Safety Objectives (OSO)

The guidelines to define a UAS operation ConOps (Annex A) and the Glossary (Annex I) are still valid and applicable: all Annexes are at issue 1.0. You can download the SORA Package Issue 2.0 at

Contact JARUS,

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