Forskrift
§ Section 7. Priority
Priority
In accordance with the Treaty on Open Skies, aircraft undertaking observation flights are to be afforded priority over any regular air traffic.
When within controlled airspace, observation flights are to be afforded non-deviating status and priority over all other aircraft except
a) aircraft in an emergency
b) aircraft performing roles where the safety of life is involved
c) aircraft transporting heads of state
d) state aircraft performing roles for national security.
Observation flights outside of controlled airspace (Class G airspace) must be carried out in accordance with standardised European visual flight rules (VFR) and give way accordingly.