Under what condition are aircraft on diverging radials considered to be laterally separated?

Aircraft on diverging radials are considered laterally separated when either aircraft is beyond the airspace that needs to be protected for the other. This means that as long as the two aircraft are oriented in such a way that their flight paths are moving away from each other, they are effectively clear of conflict even if they are on technically different flight paths, as long as the necessary lateral separation is maintained.

This principle is crucial in air traffic control as it allows for efficient use of airspace and ensures safety. The "protected airspace" refers to the lateral separation minimums established by regulations to prevent collisions. When one aircraft is beyond the area that needs to be safeguarded for another’s operation, there is a reduced risk of horizontal conflicts, thus affirming their status as laterally separated.

Understanding this concept helps in effectively managing air traffic, especially in busy air spaces where the distance between aircraft can greatly affect overall operational safety.