Automated terminal proximity alert (ATPA)

{
  "id": "MLC-T-AVN-000153",
  "term": "Automated terminal proximity alert (ATPA)",
  "field": "Aviation and air traffic control",
  "definition": "Monitors the separation of aircraft on the Final Approach Course (FAC), displaying a graphical notification (cone and/or mileage) when a potential loss of separation is detected. The warning cone (Yellow) will display at 45 seconds and the alert cone (Red) will display at 24 seconds prior to predicted loss of separation. Current distance between two aircraft on final will be displayed in line 3 of the full data block of the trailing aircraft in corresponding colors.",
  "abbreviation": "ATPA",
  "references": [
    "FAA Pilot/Controller Glossary"
  ],
  "url": "https://mlchart.com/terminology/aviation/automated-terminal-proximity-alert-atpa/"
}