An OSC is required to conduct drone spraying/spreading. It is also required for operators flying the larger DJI Agras drones, such as the T50, T40, T30, and T25, due to their weight. heliguy™ provides an in-house OSC consultancy to help candidates prepare for the submission to the UK CAA. Candidates are required to have a valid Operational Authorisation (from GVC) before they can apply for an OSC. Separate costs for the OSC process apply.