Air Traffic Control Fully Certified
Human-Machine Interface
ATC Issue All Types
General None Reported / Taken
ATC Equipment / Nav Facility / Buildings
Aircraft were opposite direction and hardly flashed at all when in direct conflict. Most of the Conflict Alert (CA) flashing seemed to be after the aircraft had passed; not before. At around 5 miles; tail to tail; they stopped flashing. Find out why the CA function operates intermittently or too late or not at all in some cases.
ZSE Controller voiced concern regarding the functionality of the 'Conflict Alert' (CA) system; noting the CA operates intermittently; too late or not at all.