»navigationshjælpeudstyr« fysisk navigationshjælpeudstyr, som er anbragt på Jordens overflade, det kan f.eks. være Very High Frequency Omnidirectional Radio Range (VOR), Distance Measuring Equipment (DME), lokalisator, Tactical Air Navigation Beacon (TACAN) osv., som kan hjælpe med at dirigere lufttrafikken sikkert gennem eksisterende luftruter —
‘navaid equipment’ means a physical navaid equipment placed on the Earth surface, like Very High Frequency Omnidirectional Radio Range (VOR), Distance Measuring Equipment (DME), localizer, Tactical Air Navigation Beacon (TACAN) etc., which help in guiding aircraft traffic safely through existing air routes,