What is the correct phraseology to authorize visual separation between IFR arriving and departing aircraft?

The correct phraseology for authorizing visual separation between IFR arriving and departing aircraft is structured to clearly communicate to the involved pilots and controllers the intent to establish visual separation and ensure safety. The chosen phrase confirms authorization of visual separation, specifying the aircraft by their identifications. Additionally, it provides clear instructions regarding the departing aircraft, indicating that it is released for its maneuvers.

This phraseology ensures a mutual understanding among air traffic control and pilots, as it explicitly states the parameters of the separation, which is crucial in maintaining safe distances between aircraft operating in the same airspace. The reference to the departing aircraft being released also provides guidance for the departure process, indicating when the aircraft can proceed. This is vital in busy airspace where multiple aircraft are operating simultaneously.

In contrast, other options either lack specificity regarding the authorization of visual separation (as seen in phrases that simply state separation will be maintained or is approved) or do not clearly instruct the involved parties on how to proceed with their respective flight operations.