Forskrift
§ Section 8. Flight Safety
Flight Safety
In order to ensure the highest level of flight safety all observation flights should be carried out in controlled airspace. All flights in controlled airspace requires ATC clearance. Except when necessary for take-off or landing flights in terminal control areas (TMA) must be carried out at minimum 7000 feet AMSL.
For flight safety reasons and to assist in affording priority over other regular air traffic, whilst operating outside of controlled airspace (Class G airspace), observation flights are strongly recommended to remain within the bounds of radio and surveillance coverage.
For flight safety reasons it should be published a NOTAM that informs about the observation flights.