Big strides in air control

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Big strides in air control

Lesley Weitz

Throughout 2016, the FAA continued its deployment of a new air-traffic-control ground automation capability, called Ground-based Interval Management Spacing, to assist controllers in sequencing and scheduling aircraft into terminal radar control areas during busy traffic periods. This capability leverages automation functions that predict aircraft trajectories to merge points in the airspace and schedules times to cross those points. Once a flight's schedule at downstream points is determined, the air traffic controller is presented with a speed advisory calculated using a model of the aircraft's trajectory and forecast winds along the flight path, to meet the schedule. This system is expected to reduce the use of costly holding patterns or route extensions that may occur without the assistance of automation.