The PBN
concept comprises the following elements:
Performance Based Navigation (PBN) – Area navigation (RNAV) with
specific, consistently defined lateral navigation accuracy
requirements for a given route or approach. PBN represents a
shift away from sensor specific navigation criteria (e.g., VOR,
ILS, GPS, etc.) to a performance based concept that can exist
independently of the particular navigation systems employed to
achieve the required level of performance.