What is the PDRA01 UK drone Operational Authorisation?

• In-depth guide to the PDRA01 Operational Authorisation for drones operations in the Specific Category;

• Find out who needs a PDRA01, what it allows, and how you can obtain it;

• Learn how heliguy™ can help you secure a PDRA01 Operational Authorisation.

PDRA01 is one of the main regulatory pathways that enables drone operations in the UK’s Specific Category.

Developed by the UK Civil Aviation Authority (CAA), it provides a standardised risk assessment framework that allows operators to conduct Visual Line of Sight (VLOS) flights which fall outside the scope of the Open Category.

The key benefit is that it enables operators to fly drones less than 25kg within residential, commercial, industrial, and recreational areas, enabling heavier drones to fly in more urban environments.

Without this, drones that can not be flown in the A1 or A2 subcategory must stay at least 150m away from residential, recreational, commerical, and industrial areas.

PDRA01 provides a structured way to obtain an Operational Authorisation without needing to develop a fully bespoke risk assessment. In this guide, we explain what PDRA01 is, how it works, when operators should use it, and how heliguy™ can help. For a detailed breakdown of UK drone laws, click here.

Key takeaways

• PDRA01 is a pre-defined risk assessment framework for certain operations in the Specific Category.

• It allows organisations to apply for an Operational Authorisation using a standardised safety model.

• PDRA01 reduces the regulatory burden compared to bespoke risk assessments.

• It supports scalable enterprise drone operations, enabling operators to fly heavier drones in more built-up environments.

• For Specific Category operations that fall outside of the scope of the PDRA01, use UK SORA.

• heliguy™ can help you obtain an Operational Authorisation for PDRA01, offering dedicated training, Operations Manual service, Drone Maintenance training, and ongoing support.

What is PDRA01?

PDRA01 stands for Pre-Defined Risk Assessment 01.

It is a regulatory framework created by the UK CAA to enable certain drone operations within the Specific Category using a predefined safety model.

Rather than building a detailed operational risk assessment from scratch, operators can apply for authorisation using the standardised operational conditions defined by PDRA01.

The framework defines:

• The operational environment.

• Aircraft weight limits.

• Required safety mitigations.

• Pilot competency requirements.

By following these predefined conditions, organisations can obtain an Operational Authorisation more efficiently.

PDRA01 is the only PDRA that is currently available. The Civil Aviation Authority may add more in the future.

What does PDRA01 allow me to do with my drone?

Many commercial drone operations take place in environments that fall outside or are limited by Open Category rules.

PDRA01 enables operators to:

• Fly aircraft below 25kg within 150m of any residential, commercial, industrial, and/or recreational areas within visual line of sight (VLOS).

What are the limitations of a PDRA01?

The parameters of a PDRA01 ensure the operation remains within acceptable risk levels defined by the CAA.

As such, there are some important rules to abide by, including:

• Keep the drone within 120 metres (400ft) from the earth's closest point.

• Flights must be VLOS.

• Flights must not be carried out within 50m of uninvolved persons, except during take-off and landing, where this separation may be reduced to 30m.

• Any overflight of uninvolved people must be kept to a minimum.

• Flights must not be carried out within 50m horizontal separation of assemblies of people. Any overflight of assemblies of people must not be conducted.

When should operators use PDRA01?

PDRA01 is commonly used for commercial drone operations that take place near buildings or infrastructure where Open Category separation distances cannot be maintained.

Common PDRA01 use cases include:

• Roof inspections

• Property photography

• Construction site monitoring

• Infrastructure inspection

• Surveying buildings and facilities

These operations often occur in built environments where the Open Category rules would otherwise restrict flights.

PDRA01 requirements

For a PDRA01 authorisation, pilots need:

• Valid Flyer ID and Valid Operator ID. Click here to find out more.

• Valid RPC-L1 (Level 1 Remote Pilot Certificate) or a GVC (General Visual Line of Sight Certificate).

• Have at least two hours of flying experience in the previous three months. This experience must be gained on similar and/or equivalent UAS to the UAS that will be used under PDRA01 Operational Authorisation.

• Valid insurance.

• Operations Manual.

• Remote Pilot’s Logbook.

• Operator's aircraft technical logbook.

PDRA01: Drone pilot training

Either a RPC-L1 or GVC is required to be able to apply for an Operational Authorisation.

The GVC and RPC-L1 are broadly similar in the level of competency needed to attain them.

PDRA01: Operations Manual

The Operations Manual is a key part of obtaining a PDRA01 authorisation.

It sets out key criteria, such as:

• Nominated personnel.

• Qualifications, currency, and competency.

• Security and privacy.

• Flight operation details, including maintenance, in-flight procedures, site procedures, and post-flight checks.

• Drone description, including UAS details, charateristics, and environmental limitations.

• Site survey form.

The UK CAA has an Operations Manual template to streamline the process.

PDRA01: Remote Pilot’s Logbook

Pilots operating under a PDRA01 must have a Remote Pilot’s Logbook.

The flight log should be in a digital format and must be completed with key details for every flight conducted. These include:

• Your name and Flyer ID.

• Date of flight.

• Take-off and landing location.

• Duration of flight, including whether in daylight or at night.

• Description of the flight, including remarks on any unusual technical or operational occurrences.

• Make and model of UAS flown.

• UAS serial number (or registration number, if applicable).

The UK CAA offers a PDRA01 Remote Pilot Logbook Template.

PDRA01: Drone Operator's Technical Logbook

Pilots must maintain an aircraft technical logbook of the following information for each aircraft they fly under their PDRA01 Operational Authorisation:

• Make and model of aircraft.

• Aircraft serial number or registration number (if applicable).

• Date, time, duration, and take off and landing location for each flight.

• Remote Pilot for each flight.

• Total number of flight hours/cycles (take-off and landings).

• Details of each operation carried out.

• Any significant incident or accident.

• A completed pre-flight inspection.

• Any site risk assessments and radio frequency surveys carried out.

• Maintenance records and activities, including details of any defects, repairs and changes to the aircraft configuration.

• The information required to comply with UAS.SPEC.100 Use of certified equipment and certified unmanned aircraft.

UK SORA: For operations outside of PDRA01

PDRA01 doesn’t cover every drone operation in the Specific Category.

If the operations are not covered by PDRA01, then you will need to apply for an Operational Authorisation using UK SORA (Specific Operations Risk Assessment), which has replaced the previous OSC (Operating Safety Case) method.

Examples of operations that require a UK SORA-based operational authorisation include:

• Dropping items from your drone.

• Flying beyond visual line of sight (BVLOS).

• Flying close to crowds.

• Flying close to people with aircraft that weight 500g or more.

• Flying at increased heights above ground level.

• Swarm operations.

• Flying more than 120m (400ft) above ground level.

heliguy™ has in-house regulatory specialists to help you prepare and secure UK SORA permissions.

PDRA01 compliance

All PDRA01 Operational Authorisation holders are required to maintain an Operations Manual to comply with UK Regulation (EU) 2019/947.

The UK CAA conducts targeted compliance assessments of PDRA01 OA holders which may occur at any time during the 12-month validity period of the authorisation.

This provides an assurance that PDRA01 OA holders have an Operations Manual and are keeping logs and records of their flying activity. If you are selected for compliance checking, you will receive a notification from the UK CAA. From this point, you will have 28 calendar days to respond and provide the requested evidence.

If the CAA does not receive the required evidence from you within this time, your OA will be suspended.

This is why it is crucial to keep your paperwork up-to-date.

How to reapply for a PDRA01

The PDRA01 is valid for 12 months.

Pilots can reapply from 28 days before their PDRA01 Operational Authorisation expires.

How can heliguy™ help me obtain a PDRA01?

heliguy™ has an in-house training team and regulatory department.

heliguy™ helps pilots complete their GVC training to apply for an Operational Authorisation.

We also offer an Operations Manual Renewal Service.

Maintenance is an important part of PDRA01 compliancy. heliguy™ offers Drone Maintenance Training to ensure operators understand their legal responsibilities and can conduct basic remedial tasks.

Summary

PDRA01 provides a practical regulatory pathway for organisations conducting commercial drone operations in built environments.

By standardising the risk assessment process, the framework enables operators to obtain Operational Authorisation more efficiently while maintaining strong safety oversight.

For many inspection, surveying and photography missions, PDRA01 represents an important step beyond the Open Category — enabling safe and compliant drone operations across residential, commercial, industrial, and recreational areas.