Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Blinde nadering-nl#Sense
Blind approach-en#Sense
Προσέγγιση χωρίς ορατότητα-el#Sense
Aproximação sem visibilidade-pt#Sense
Blindanflug-de#Sense
Approche sans visibilité-fr#Sense
Avvicinamento strumentale-it#Sense