Question juridique clé
Whether the lack of a SIL object sheet barred approval of necessary airport operating changes
Solution extraite
Necessary operational adjustments to compensate for DVO-related capacity losses could be approved even without the Zurich SIL object sheet, but capacity-increasing changes generally could not.
Motifs extraits
The court held that the missing object sheet did not make the operating regime unlawful; it only required restraint for non-essential or capacity-expanding measures, while necessary safety and compensation measures could still be authorized.