1a. Traffic orientation. Flights to destination EHAM shall not plan via NORKU if coming from the South via the Ruhr sector nor if coming from the North/Northeast via the Jever/Holstein sector of Maastricht UAC. Flights via NORKU shall generally come from the East/Southeast.
1b. To avoid that flights are filing above an active military area when its upper limit, promulgated in the EAUP/EUUP, is lower than the standard value. For ARR EHAM there is not sufficient distance to descend on the short distance between the southern boundary of the military area and NORKU. During military activity, these flights shall plan a lateral re-routing to reach NORKU.
1c. ATC flight data processing system requirement. Traffic crossing the MAPOX Gate shall file via MAPOX or BIGGE before NORKU. This ensures automatic flight plan processing. DCT segments within MUAC FRA are possible (e.g. MAPOX DCT NORKU) as well as cross-border FRA options (e.g. MASEK DCT BIGGE).