Definition
A computer system used by air traffic controllers in terminal areas (the airspace surrounding busy airports) to automate and assist with the tracking, sequencing, and separation of aircraft. It processes radar data, flight plans, and other inputs to give controllers an updated, integrated picture of traffic so they can issue clearances and instructions efficiently.
Plain English
A controller's computer system at busy airports that helps keep track of all the aircraft coming and going, so controllers can manage traffic safely and smoothly.
Context Anchor
You may see TAAS in FAA acronym lists or in discussions of air traffic control systems used around airports.
Derivation
"Terminal" refers to the airspace and ATC facility around an airport (where flights begin or end), as opposed to en route airspace between airports. "Advance automation" simply means a more advanced computerised system that replaces older, more manual methods of tracking aircraft.
Why Pilots Care
It contributes to reduced controller workload and improved safety margins during busy arrival and departure sequences.
Intuition Check
Do not read “terminal” here as an airport building. In this term, “terminal” means the airspace and traffic-control environment around an airport.
Example Sentence 1
The controllers at the busy Class B airport rely on TAAS to sequence arriving and departing traffic.
Example Sentence 2
The terminal facility upgraded its TAAS to handle higher traffic volumes without added delays.