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ARPAS-UK Statement on UK PDRA-01: welcome standstill, as advocated

ARPAS UK welcomes the Civil Aviation Authority’s (CAA) announcement regarding the postponement of significant changes to UK PDRA-01. The decision to maintain the current iteration of PDRA-01 until 31 March 2026 demonstrates an understanding of the industry’s need for stability during the introduction of UK SORA (Specific Operations Risk Assessment).

DiSCO, the digital platform for PDRA01 applications, was a success, and the community recognises it. There is no value in another cycle of changing regulations and format with no benefit in terms of operating envelope, and following a new methodology that has not been tested yet with the OSC/ORA holders. 

In December 2024, ARPAS UK highlighted concerns to the CAA regarding the transition to the SORA methodology and advocated for “no impact, no change” on existing PDRA-01 operations. We are pleased to see the CAA addressing these concerns and delaying immediate changes, allowing operators to continue their activities without disruption.

Learning from Europe’s Experience: very low adoption of very conservative PDRAs. Must put more thoughts into proportionate, useful PDRAs.  

Feedback from the EASA IAM Forum in October 2024 highlights the low adoption rates of SORA-based PDRAs and Standard Scenarios in Europe. The EASA PDRAs derived from SORA are notably conservative and impose restrictions far greater than those under UK PDRA-01. They do not adequately meet industry needs and as a result adoption so far is low. The SORA methodology is developed, but its implementation is still a work in progress. It has become clear now that those initial scenarios need rework to become effective tools.  A review of UK PDRA01 that would result in an alignment with one of those PDRAs would hinder “business as usual” operations for many UK operators.

Advocating proportionality in the UK approach to SORA 

While aligning UK operations with the global standards followed by JARUS member countries offers long-term benefits, ARPAS-UK remains concerned about the challenges posed by the transition to SORA: 

  • The SORA methodology should enable us to do more complex operations, more consistently, and following an approach that can be exported.
  • For lower risk operations however, a full SORA application is most likely disproportionate and … beyond many operators’ grasp. ARPAS-UK suggests adopting simpler, more relevant authorisation frameworks, such as additional PDRAs or generic SORAs, where the CAA has done the work of mastering the SORA methodology and provides proportionate standard recipes that operators can easily understand and implement.

The current PDRA-01 covers drones up to 25kg, yet many operators fly much smaller, lower-risk drones. ARPAS UK continues to advocate for additional PDRAs tailored to the realities of drone operations, focusing on:

  • Reduced distances from uninvolved people for low-mass, low-speed, low-height drone operations.
  • BVLOS (Beyond Visual Line of Sight) with visual observers, also known as extended VLOS.
  • Higher operational heights, exceeding the current maximum of 120m.

We propose standardised and scalable authorisations, not location-specific, and facilitated through a streamlined, digitised process. These improvements would make low-risk activities more accessible, encouraging more operators to apply for or renew their Operational Authorisations.

As the UK’s trade association for the drone industry, ARPAS UK strongly supports regulation that is both appropriate and proportionate. We believe that relevant and accessible authorisations will encourage operators to remain within the regulatory framework, promoting industry growth and maintaining high safety standards.

By continuing to engage with the CAA and advocating for sensible regulatory solutions, ARPAS-UK aims to ensure that the UK drone industry thrives under a system that balances safety with operational practicality.

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SORA 2.5 Training with DroneTalks – 20% Off for ARPAS-UK Members

Stay Ahead of the Curve with SORA 2.5
2 Day Training with DroneTalks Academy
March 2025 | London UK & Online

DroneTalks is holding an interactive online and in-person two-day training session this March, designed to help participants quickly gain a comprehensive understanding of the SORA methodology. Covering everything from foundational concepts to real-world applications, the course is designed to equip attendees with the skills needed to effectively utilise the best risk management framework for drones. The training will be led by Lorenzo Murzilli, aviation safety expert, Co-founder and CEO of Murzilli Consulting, and former leader of JARUS and Swiss FOCA.

Key Benefits:

  • Master SORA 2.5 with an in-depth understanding of its regulatory foundations
  • Engage in Q&A sessions to address your toughest challenges
  • Access practical tools and templates to streamline operational approvals
  • Expand your network with professionals in the drone and AAM industries
  • Achieve a respected certification to highlight your expertise
  • Learn from real-world case studies shared by industry experts
  • Gain actionable insights into evolving drone regulations and operational practices

Programme Modules

13-14 March 2025

  • DAY ONE – 13 MARCH
  • Introduction & Icebreaker
  • Background of the SORA
  • SORA structure
  • Semantic Model and key SORA principles
  • Overview of the SORA annexes
  • The ConOps and OM
  • DAY TWO – 14 MARCH
  • Deep Dive: Ground Risk
  • Deep Dive: Air Risk
  • Deep Dive: SAIL/OSO
  • Deep Dive: Adjacent Airspace
  • SORA 2.5
  • LUC

Why Attend the DroneTalks Training Event?

Led by Lorenzo Murzilli, aviation safety expert, Co-founder and CEO of Murzilli Consulting, and former leader of JARUS and Swiss FOCA, this two-day training offers:

  • Obtain the latest SORA updates from Lorenzo Murzilli, leader of JARUS WG-SRM
  • Grow your network with some of the top players in the ecosystem
  • Receive training tailored to your needs
  • Gain lifetime community access via our online channels
  • Attend each session live on our virtual, interactive platform or in person
  • Receive official certification upon successful completion

DroneTalks are offering 20% OFF to ARPAS-UK Members
See your latest ARPAS-UK Members Bulletin (15.01.25) for your Discount Code

dronetalks academy

7 January 2025

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CAA: Information on plans to implement SORA in the UK

From the CAA on 16 Feb 2022.

The Specific Operating Risk Assessment (SORA) is a way to classify the risk posed by a UAS operation and then identify mitigations and safety objectives to counter those risks. It allows the UAS operator to identify operational limitations and training objectives for the personnel involved in the flights, technical requirements for the aircraft and develop the appropriate operational procedures.

The CAA will be introducing SORA in the UK but for now UAS operators who wish to apply to fly in the Specific category should continue to use the methodology and templates laid out in CAP 722A publication until the CAA provides further updates on the development of the UK SORA.

UK SORA development

The UK SORA is still in development; however, the CAA has provided some initial information.

UK SORA and the European Aviation Safety Agency (EASA) SORA

There may be some differences between the UK and EASA versions of SORA. These will be necessary to accommodate national requirements and will be laid out in the CAA’s consultation for the UK SORA.

UK SORA and international operations

Individual National Aviation Authorities (NAAs) will decide whether to recognise the UK SORA using their assessment of the SORA submitted by applicants. Some states may have different airspace requirements, technical requirements and national sensitivities that will need to be addressed between the applicant and the respective NAA on a case-by-case basis.

Beyond Visual Line of Sight (BVLOS) operations in non-segregated airspace

The SORA is a tool that may enable BVLOS flights in non-segregated airspace. However, it is not intended as a ‘one-stop-shop’ for allowing full integration of all types of UAS into all airspace classes. The SORA indicates the type of performance goal(s) for airspace segregation/integration measures necessary to meet the target levels of safety for the given airspace volume.

Pre-defined risk assessments (PDRAs)

The current PDRA package being developed by the Joint Authorities for Rulemaking on Unmanned Systems (JARUS) will be reviewed as part of the UK SORA project and if acceptable, the CAA will adopt them in the UK.

Recognised Assessment Entities (RAEs)

The impact of UK SORA on RAEs is being assessed as part of our implementation project.

There are current projects to look at the scope and tasks of RAEs. The CAA will inform all RAEs as soon as possible.

UK SORA implementation

UK regulations

UK SORA will be used as an Acceptable Means of Compliance (AMC) to Article 11 of Regulation (EU) No 2019/947 as retained (and amended in UK domestic law) under the European Union (Withdrawal Act 2018). SORA is not a regulation; it is a set of recommendations and guidelines for conducting a risk assessment and meeting required target levels of safety.

As SORA will be new AMC for Article 11 of UK Regulation (EU) 2019/947, regulatory change is not required to implement it.

Timelines

The CAA plans to have the UK SORA ready for consultation in Q1 2024. However, there are a number of dependencies that need to be addressed first. The CAA are planning to implement a UK SORA package in Q3/4 2024.

Implementation

The SORA implementation project is an extensive, comprehensive project which is considering all elements of how the UK will implement SORA. .  

Training courses for UAS operators will be developed as part of the SORA project and we’ll provide more details on these when they’ve been confirmed.

Benefits of SORA and differences with the current risk assessment methodology

CAP 722A is primarily a qualitative methodology and SORA is a more quantitative methodology. SORA has been developed internationally with consensus from multiple NAAs and industry experts and it sets an acceptable target level of safety for proposed operations in the Specific category.

Valid Operational Authorisation (OA)

OAs which are valid when SORA is implemented will not be cancelled. They will remain valid for the period of validity stated on the authorisation.

The Operating Safety Case (OSC)

OSCs will need to be revised for SORA and there will be a transitional period to allow UAS operators to update them. Details of the transitional period will be communicated as part of the consultation process.

The current application process for flights in the Specific category may change, including application costs, and this will also be reviewed as part of the SORA implementation project. The CAA will run a further consultation on costs as part of their Scheme of Charges review.

SORA and innovation projects

Use of SORA elements

Applicants should not use elements of SORA when completing a Specific category application. Applications should be submitted using the methodology outlined in CAP 722A and mixing the methodologies is not recommended.

SORA is a complete risk assessment process based on detailed mathematical modelling. Applications involving a mixed methodology approach will increase the assessment time as the methodology will require evaluation to ensure it complies with Article 11 of UK Regulation (EU) 2019/947.

Use of SORA for planning an application

At this stage it is not possible to provide guidance on any specific details of the UK SORA.  JARUS may still change elements of its SORA as reviews are ongoing and the details of the UK SORA is still being developed.

The CAA are focused on delivering UK SORA as soon as possible – ensuring it works for the UK and the UAS industry. Until the CAA releases further information, applicants should use the guidance in CAP 722A when conducting the Specific category risk assessment and when planning applications.

Link to the CAA website

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CAA: JARUS SORA external consultation

The Joint Authorities for Rulemaking on Unmanned Systems (JARUS) is currently consulting on a future Specific Operating Risk Assessment (SORA), which enables operators to classify the risk posed by a drone being flown in the specific category and then identify mitigations and safety objectives. 

The CAA is encouraging UK operators to respond to this consultation as they will use this work to build a specific SORA for operations in the UK. 

The JARUS consultation is open until 6 March 2023 and can be completed online at JARUS External Consultation – “SORA Version 2.5 package”

23 January 2023

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CAA: Consultation on future Specific Operating Risk Assessment (SORA)

23 January 2023 – In the future the CAA will be introducing the Specific Operating Risk Assessment (SORA) for UK RPAS operations in the specific category.

This is a way to classify the risk posed by a RPAS and then identify mitigations and safety objectives. It allows the operator to identify operational limitations, and training objectives for the personnel involved (e.g. remote pilots, observers, maintainers), technical requirements for the drone and develop the appropriate operational procedures that will be part of the operator manual.

Rather than regulation, it is a set of recommendations and guidelines to conducting a risk assessment and meeting required target levels of safety for use in the specific category. When introduced it can be used as an acceptable means of compliance to article 11 of the UAS implementing regulations.

The CAA has been working within the Joint Authorities for Rulemaking on Unmanned Systems (JARUS) for several years to develop this SORA.

JARUS is currently consulting (until 6 March 2023) on the latest version. You can reply to this consultation at JARUS External Consultation – “SORA Version 2.5 package” | JARUS (jarus-rpas.org). Any comments on this consultation need to be sent to JARUS directly, and not to the UK CAA.

As the current version is still being developed it isn’t yet available to UK operators to use as part of their Operational Authorisation. However, the CAA is encouraging UK operators to respond to JARUS as we will use this work to build the UK specific SORA. This consultation is being done so the UK CAA meets our regulatory requirements to consult on changes as covered under the Basic Regulation Article 115.

JARUS is an international group comprising of national authorities and industry experts working to develop a harmonised approach to RPAS operations around the world. The SORA has been widely recognised and adopted as an acceptable means of compliance around the world (including EASA, Canada, Australia and New Zealand) to provide a robust safety case to competent authorities for RPAS operations in the Specific Category.

Its guidance material aims to allow each authority to write their own requirements and avoid duplication. Whether the UK’s future SORA will be recognised internationally will be down to individual National Aviation Authorities. Some nations may have different airspace requirements and national sensitivities that will need to be addressed between the applicant and the respective NAA on a case-by-case basis.

Once the JARUS consultation is complete, JARUS will publish the comment response document which we will publicise.

23 January 2023