In the context of traffic flow management, what is an important piece of information for non-approach control?

In traffic flow management, the estimated time of arrival (ETA) is crucial for non-approach control as it enables controllers to anticipate an aircraft's arrival at its destination. This information allows for better coordination and management of air traffic, ensuring that arrivals are sequenced efficiently and that the airspace and airport resources are utilized effectively. By having access to ETAs, controllers can make informed decisions about potential delays, holding patterns, and runway utilization, all of which contribute to smoother operations and improved safety in air traffic management.

While other factors like flight numbers, weather conditions, and aircraft types are important for overall situational awareness and flight management, the ETA specifically provides a temporal aspect that is essential for planning and managing traffic flows effectively, making it the most relevant piece of information in this context.