What is the minimum degree of divergence required between two aircraft established on the same NAVAID for them to be considered separated?

In air traffic control, ensuring safe separation between aircraft is crucial, particularly when they are both utilizing the same NAVAID (navigational aid). The minimum degree of divergence required, established as part of standard separation criteria, is 15 degrees. This measurement is taken from the point of NAVAID use, ensuring that the aircraft maintain an adequate lateral separation to prevent instances of potential collision or interference due to their respective flight paths diverging.

Establishing a divergence of 15 degrees ensures that the paths of the aircraft are sufficiently distinct, taking into account various factors such as wind drift and navigation accuracy. By applying this standard, air traffic controllers can confidently manage the separation of aircraft in proximity to each other while utilizing common navigational aids.