Definition
Computer-based systems used by air traffic controllers to assist with traffic management decisions, such as sequencing arrivals, predicting conflicts, metering traffic flow, and optimizing routes. They process radar, flight plan, and weather data to provide controllers with recommendations and predictions, but the controller retains the decision-making authority.
Plain English
Software that helps air traffic controllers manage traffic by predicting where aircraft will be and suggesting how to space, sequence, or route them. The controller still makes the call; the tool just provides the analysis.
Context Anchor
Seen in discussions of air traffic control sectors, where controllers use tools to manage aircraft moving through assigned portions of airspace.
Derivation
Decision comes from a Latin root meaning “to settle or determine.” Support means “to hold up or assist,” and tool means “an instrument used to do work.” Together, the phrase points to something that assists a person in making a decision, rather than something that makes the decision by itself.
Why Pilots Care
They lower workload and reduce the chance of missed information in busy or complex airspace.
Intuition Check
Do not read “decision support tools” as tools that make the final decision. In aviation, they support the controller or pilot by showing useful information, while the person still decides what action to take.
Example Sentence 1
Controllers in the sector use decision support tools to sequence arrivals into the busy terminal area.
Example Sentence 2
Updated weather data from decision support tools helped the crew choose the best approach during the sector transition.