ATPL EASA Radio Navigation Practice Exam

A VOR (VHF Omnidirectional Range) station is identified by a unique three-letter identifier displayed on the navigation display. This identifier is a critical feature because it allows pilots to quickly confirm that they are tuning into the correct VOR frequency and ensures safer navigation.

Each VOR station has its own distinct code, which is derived from the International Civil Aviation Organization (ICAO) coding system. The display of this three-letter identifier on the navigation instrument provides a clear and concise reference for flight crews, reducing the risk of confusion and errors during navigation.

While geographical location provides context for the VOR station, it does not serve as a means of identification in operational procedures. Color-coded signals on radar are not used for VOR identification; instead, VORs function by broadcasting a reference signal and a variable signal allowing for directional finding. The type of signal emitted by a VOR is not used as an identification method either, as many VORs share similar characteristics in terms of signal type, thereby making the three-letter code essential for unambiguous identification.