Upon visual separation approval, what phrase is typically used regarding a departing aircraft?

When visual separation is approved for a departing aircraft, the phrase "Release at discretion" is typically used. This phrase indicates that the controller gives the pilot the authority to depart when they feel it is safe to do so, rather than issuing an immediate instruction to take off. This is particularly relevant in situations where the traffic situation is dynamic and the pilot's judgment is necessary to ensure safe separation from other aircraft.

Using "Release at discretion" allows for more flexibility in the timing of the departure, enabling the pilot to consider various factors, such as runway occupancy and potential conflicts with other traffic, facilitating an efficient and safe operation. This reflects a level of trust in the pilot's ability to manage their departure in relation to current conditions.

The other terms typically refer to distinct authorization scenarios. For instance, "Cleared for takeoff" is a direct instruction that requires immediate action, while "Approved for landing" relates specifically to incoming aircraft and has no relevance to departures. Similarly, "Release to altitude" would not apply in this context, as it pertains to an altitude clearance rather than departure procedures.