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normal operating zone
aviat., canad.	zone d’évolution normale
Anglais glossaire
normal operating zone
aviat.	Airspace of defined dimensions extending to either side of an ILS localizer course and/or MLS final approach track. Only the inner half of the normal operating zone is taken into account in independent parallel approaches.
aviat., canad.	An airspace of defined dimensions, extending to either side of an instrument landing system ILS localizer centreline. Only the inner half of the normal operating zone is taken into account in independent approaches.