PDRA and Standard Scenarios Flashcards
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What is a 'Standard Scenario' (STS) in the context of UK UAS regulations?
Answer: A published set of operational conditions and mitigations that operators can declare against, similar to a PDRA but aligned with harmonised European standards
Standard Scenarios are published frameworks defining specific operational conditions, risk mitigations, and competency requirements. They allow operators to conduct certain types of Specific category operations by declaring compliance rather than applying for individual authorisations. In the UK, the CAA has adopted and adapted standard scenarios from the European framework.
How does STS-01 (VLOS over controlled ground area) differ from PDRA01?
Answer: STS-01 permits flight over controlled ground areas in populated environments, while PDRA01 focuses on VLOS operations with restrictions on overflying uninvolved persons
STS-01 specifically addresses VLOS operations over a controlled ground area in populated environments, where the operator has established measures to control access to the area below the flight path. PDRA01 covers broader VLOS operations but with restrictions on overflying uninvolved persons and prohibitions on flying over assemblies. The key differentiator is STS-01's focus on controlled ground areas.
What is the role of a 'UAS Operator' versus a 'Remote Pilot' under UK Specific category regulations?
Answer: The operator is legally responsible for the overall operation and holds the authorisation; the remote pilot is the person physically controlling the UAS
The UAS operator is the legal entity (person or organisation) responsible for the safety of the operation, holding the Operator ID and any required Operational Authorisation or PDRA declaration. The remote pilot is the individual who physically manipulates the flight controls. An operator may employ multiple remote pilots, but the operator retains overall legal responsibility.
What must an operator do if they wish to conduct operations that fall outside the conditions of any published PDRA or standard scenario?
Answer: They must apply to the CAA for a bespoke Operational Authorisation, supported by a SORA or equivalent risk assessment
If the planned operation does not fit within any published PDRA or standard scenario, the operator must apply to the CAA for a bespoke Operational Authorisation. This application must include a thorough risk assessment (typically using the SORA methodology), an operations manual, and evidence of pilot competency. The CAA will review and may grant, modify, or refuse the authorisation.
Under PDRA01, what insurance requirement applies to commercial UAS operations in the UK?
Answer: The operator must hold valid third-party liability insurance that meets the requirements of EC Regulation 785/2004 as retained in UK law
Commercial UAS operators in the UK must hold valid third-party liability insurance as required by EC Regulation 785/2004 (as retained in UK law after Brexit). This ensures that any damage to third parties caused by the UAS operation is covered. The minimum coverage depends on the MTOM of the UAS.
What is the process for transitioning from a legacy PfCO (Permission for Commercial Operations) to the current UK UAS regulatory framework?
Answer: PfCO holders were given a transition period to obtain a GVC and declare under a PDRA or apply for an Operational Authorisation
When the UK transitioned to the new UAS regulatory framework (based on the three-category system: Open, Specific, Certified), holders of the legacy PfCO were given a transition period. During this period, they could convert their qualification to a GVC through a streamlined process and then declare operations under PDRA01 or apply for an Operational Authorisation as needed.
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- regulatorylibrary.caa.co.uk — Renewal, exam format, passing score, retake policy, score validity, test delivery, eligibility · verified Oct 2026