Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4826002
Is Reference of Normaali lentotila-fi#Sense
Normal flight condition-en#Sense
Κανονική συνθήκη πτητικής λειτουργίας-el#Sense
Normale vluchtomstandigheid-nl#Sense