Height above touchdown (HAT)

{
  "id": "MLC-T-AVN-000468",
  "term": "Height above touchdown (HAT)",
  "field": "Aviation and air traffic control",
  "definition": "The height of the Decision Height or Minimum Descent Altitude above the highest runway elevation in the touchdown zone (first 3,000 feet of the runway). HAT is published on instrument approach charts in conjunction with all straight-in minimums.",
  "abbreviation": "HAT",
  "see_also": [
    "Decision height (DH)",
    "Minimum descent altitude (MDA)"
  ],
  "references": [
    "FAA Pilot/Controller Glossary"
  ],
  "url": "https://mlchart.com/terminology/aviation/height-above-touchdown-hat/"
}