APV is the International Civil Aviation Organization (ICAO) term for an approach with vertical guidance, and it refers to specific ICAO criteria adopted in May 2000. This approach classification allows the use of stabilized descent using vertical guidance without the accuracy required for traditional precision approach procedures. The US has developed criteria for lateral/vertical navigation (LNAV/VNAV) and LPV approach procedures that meet this approach classification. The LNAV/VNAV and LPV approaches provide guidance in both the lateral and vertical planes.

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