scope:

PURPOSE

The purpose of this circular is to provide guidance on applying the global navigation satellite system (GNSS) lateral separation minima which is based on the VHF omnidirectional radio range (VOR) lateral separation minima. It is aimed at a worldwide audience within the civil aviation authorities responsible for implementing this and other separation minima.

As a result of the large number of aircraft equipped with instrument flight rules (IFR) GNSS equipment for navigation and its potential use for separation in the procedural environment, the Separation and Airspace Safety Panel (SASP) developed the separation minima detailed in this document for interim use in the transition period to widespread implementation of performance-based navigation (PBN). These separation minima are intended to exploit the capabilities and precision of GNSS equipment that, as a minimum, meet the requirements of ICAO Annex 10 - Aeronautical Communications, Volume I - Radio Navigation Aids.