What is considered the least disruptive Traffic Management Initiative?

Mile-in-trail or minute-in-trail is considered the least disruptive Traffic Management Initiative because it allows for a controlled spacing of aircraft in the airspace, which minimizes delays and can effectively manage air traffic without requiring aircraft to be held on the ground or delayed significantly. This initiative involves sequencing aircraft at consistent intervals, usually in terms of minutes, and allows for natural flow while accommodating variations in aircraft speeds and operational capabilities. As a result, it tends to cause less inconvenience for passengers and operations compared to other initiatives, which may involve more significant disruptions.

In contrast, Airborne Holding typically involves aircraft circling in a designated area until they are cleared for landing, which can lead to longer delays and fuel consumption. Ground Delay Programs often force planes to remain on the ground for extended periods, causing potential cancellations and passenger dissatisfaction. Airport Ground Stops halt all traffic to and from the airport, resulting in a more substantial disruption to both arriving and departing flights. Therefore, the mile-in-trail or minute-in-trail method stands out as a more efficient and less intrusive option for managing air traffic while still ensuring safety and order in busy airspace.