Drones between 7 and 25 kg and drones with jet engines (regardless of weight) are subject to the following additional rules, alongside the general rules in BL 9-4:
The aircraft must be equipped with a radio control system (section 5).
Flights may only take place from an approved model aircraft airfield (section 4.3 b) and within the airspace limitations of such an airfield (section 4.3 a).
Liability insurance must be secured, as required by § 130 of the Aviation Act.
The operation must be conducted under an organization approved by the Danish Civil Aviation and Railway Authority, focusing on amateur model aircraft flying, and in compliance with regulations approved by the authority.