Consulting

Creation of SORA risk assessment & ConOps operating description for drones

Operating concept & risk analysis (SORA for drones) in the special category

SORA (Specific Operations Risk Assessment) is the procedure developed by JARUS for the systematic risk assessment of drone operations in the specific category. It serves as a recognized methodology of the European aviation authorities for assessing risks in drone operations and forms the basis for an operating license under EU law.

SORA focuses on structured risk analysis, classification into risk classes (Ground Risk Class – GRC and Air Risk Class – ARC), and the derivation of appropriate remedial measures and protective measures for people, infrastructure, and other aircraft.

Do you have questions about the product? Contact form
Tel. +49 69 509 547 400 | Mail. info@droniq. de
Do you have questions about the product? Contact form
Tel. +49 69 509 547 400 | Mail. info@droniq. de

Advantages

  • Large competence set from manned and unmanned aviation
  • Experience from cooperation with aviation authorities, LBA, BMDV and EASA
  • Direct contact with UAS manufacturers for technical support and necessary documents
  • Submission of a finished operating concept (ConOps) incl. SORA risk assessment

Procedure

Step 1: Description of the operation in CONOPS 

The first step in the SORA process involves describing the planned operation in detail. This includes: 

  • Organization of UAS operations: structure, responsibilities, personnel, quality assurance, training, and maintenance
  • Location of flight operations: airspace, UAS areas, and operating environment 
  • Drones used and aviation-related characteristics
  • Operation within or beyond visual line of sight (VLOS/BVLOS)
  • Standardized procedures for planning, executing, and documenting drone flights 
  • Safety and emergency procedures in the event of loss of control, accidents, or fires
  • Operating limits, protective measures, and reporting of incidents 

This information is crucial for subsequent risk classification. 

 

Step 2: Determine Ground Risk Class (GRC) 

The Ground Risk Class (GRC) describes the risk to people and infrastructure on the ground. The ground risk class is determined based on: 

  • Determination of risk classes and risk classification 
  • Determination of the initial Ground Risk Class (GRC) and Air Risk Class (ARC) 
  • Analysis of operational soil and air risks 
  • Determination of the final soil and air risk classes 
  • Tactical mitigation measures and assessment of their robustness 
  • Determination of the Airspace Encounter Category (AEC) and the SAIL value 
  • Identification of operational safety steps (Operational Safety Objectives – OSO) 
  • Review of location-specific protective and remedial measures 

Subsequently, potential risk mitigation measures are defined to reduce the GRC. The result is an adjusted Ground Risk Class GRC. 

 

Step 3: Air risk analysis and SAIL value 

The analysis of risks in the air is carried out in parallel with the ground risk assessment. This results in the Air Risk Class and, in combination with the GRC, the SAIL value (Specific Assurance and Integrity Level). 

The SAIL value (e.g., SAIL II) determines the requirements for:

  • technical measures 
  • operational procedures 
  • organizational responsibilities 

Remedial measures, protective measures, and risk reduction 

Based on the risk analysis, specific measures for risk reduction are defined. These include: 

  • technical protective measures on the UAS 
  • operational procedures 
  • Training of remote pilots 
  • organizational processes and responsibilities 

These measures are essential for a positive assessment by the authorities. 

PDRA, standard scenarios, and application of SORA 

In certain cases, a PDRA (Pre-Defined Risk Assessment) may be used. These simplified procedures apply to standardized operations, but do not always replace an individual CONOPS. 

We will check for you whether a PDRA is applicable or whether a full SORA is required. 

 

Operating Description (ConOps)

What is a ConOps? Operational concept for SORA Specific Operations Risk 

A ConOps (Concept of Operations) describes the complete operational concept of a drone mission. It is a central document in the SORA procedure and presents all relevant information on the planned deployment, drone flights, airspace, responsibility, and implementation.

The ConOps forms the basis for the subsequent SORA (Specific Operations Risk Assessment) and is mandatory for applications to the relevant aviation authorities.

 

Legal framework: EU, JARUS (Rulemaking on Unmanned Systems) 

The SORA methodology is based on the international Rulemaking on Unmanned Systems of the Joint Authorities of Rulemaking on Unmanned Systems (JARUS) and has been implemented in the EU via the corresponding regulation for drone operation.

It is used for:

 

  • Drone operations outside the open category
  • complex missions with increased risk
  • BVLOS flights over people or critical infrastructure

 

European drone regulations and legal background (EU 2019/947 & 2019/945)

Since January 1, 2021, harmonized drone regulations have been in force throughout Europe in accordance with Regulations (EU) 2019/947 and (EU) 2019/945. These regulations standardize drone operations within the EU and create a common basis for aviation and the use of unmanned aircraft systems (UAS).

After the transition period ends, remote pilots must acquire new qualifications for operations in categories A1/A3 or A2. For operations in the special category, a detailed operational description (ConOps) and a risk analysis according to SORA (Specific Operations Risk Assessment) are required, depending on the complexity, area of operation, and risks.

Risk analysis

The following topics are explained in detail as part of the risk analysis / risk assessment (SORA for drones):

  • Determination of the risk classes
  • Determination of the initial ground risk class (GRC) and air risk class (ARC)
  • Determination of operational soil and air risks
  • Determination of the final ground and air risk classes
  • Tactical mitigation measures to reduce ground and air risk / robustness of mitigation measures.
  • Determination of the Airspace Encounter Category (AEC) and the SAIL value
  • Identification of the Operational Safety Objectives (OSO)
  • Examination of site-specific mitigation measures
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About us

Our specialists are trained flight instructors, drone pilots, and commercial pilots who will create digital, audit-proof manuals (PDF documents) for you to submit to the relevant authorities. 

Together with you, we will define the parameters of your flight project in a workshop and discuss how to proceed. How is your organization structured, where and for what purpose do you want to carry out your flights, and which drones do you want to use for this purpose are just a few of the questions we will address. 

Following the workshop, we will work closely with you and engage in constant communication during regular online meetings to develop the operating concept and perform a risk analysis. This ensures that the concepts developed are tailored to your business and that you are kept informed throughout the entire process up to the operating license, allowing your wishes to be implemented in the best possible way. 

ConOps and SORA are also continuously and meticulously compared to determine, for example, whether the drone used is suitable for the flight project or whether adjustments are necessary in order to ultimately provide a realistic assessment. 

After approximately three months, we will provide you with a complete operating concept and risk analysis that you can submit to the authorities. We are also happy to assist you in this step of the approval process and support you in communicating with the authorities. 

Droniq is a joint venture of DFS Deutsche Flugsicherung and Deutsche Telekom AG and offers immense expertise in the fields of unmanned and manned aviation.

Our Aviation Consultants are trained flight instructors, drone and commercial pilots and have a comprehensive overview of the entire subject.

FAQ on the creation of risk analyses (SORA) for drones

A SORA (Specific Operations Risk Assessment) is a risk assessment method developed specifically for the operation of unmanned aircraft systems (UAS). This method is required by the European Union Aviation Safety Agency (EASA) and provides a systematic approach to assessing and minimizing the risks associated with the use of drones.

The objectives of SORA (Specific Operations Risk Assessment) include risk minimization, safe operation and compliance with regulations. Risk minimization is about identifying and reducing risks for people on the ground and in the air. Safe operation ensures that the use of UAS (unmanned aerial systems) takes place within an acceptable safety framework. Finally, SORA supports operators in complying with legal regulations and guidelines.

The SORA steps include a series of systematic processes to assess and mitigate the risks of operating drones.

  1. Mission description: This step contains a detailed description of the planned use of the drone. This includes information on the type of UAS, the area of operation, the flight profiles and the people involved.

  2. Categorization of the use: In this step, the mission is classified into a specific risk category. This classification is based on factors such as the flight location, flight altitude, flight range and population density in the area of operation.

  3. Initial risk identification: The initial risk categories are determined. This includes the Initial Ground Risk Class (GRC) for ground risks and the Initial Air Risk Class (ARC) for airspace risks.

  4. Risk mitigation: Risk mitigation measures are developed and implemented to reduce the identified risks to an acceptable level.

  5. Evaluation of risk mitigation: The effectiveness of the implemented risk mitigation measures is reviewed. If necessary, the measures are adjusted.

  6. Final risk assessment: Once the risk reduction measures have been implemented, the final risk categories for soil and air are determined.

  7. Documentation and reporting: Comprehensive risk assessment documentation is prepared containing all the analyses and risk mitigation measures carried out. This documentation is submitted to the responsible supervisory authority for approval.

These steps ensure that drones are operated safely and in accordance with regulations.

The benefits of SORA include a structured approach that provides a clear and systematic process for risk assessment. It is flexible and can be adapted to different types of drone missions and operational scenarios. It also helps to increase safety for air traffic and people on the ground.

  • CONOPS document 
  • SORA risk analysis 
  • Information on UAS, operation, and mission 
  • Evidence of measures and requirements 

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Droniq training employees with a drone
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Alexander Tummes

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Invitation to the next free DRONIQlive on January 29, 2026

The drone market in 2025/2026: Much progress has been made, but key questions remain unanswered. In the next edition of the DRONIQlive webinar, we will take a clear look at the developments of the past year, existing areas for improvement, and the outlook for 2026.

Moderator Alexander Tummes discusses this with Carsten Konzock (LBA), Jan Schönberg (Drones), and Jan-Eric Putze (Droniq).