Flag

{
  "id": "MLC-T-AVN-000403",
  "term": "Flag",
  "field": "Aviation and air traffic control",
  "definition": "A warning device incorporated in certain airborne navigation and flight instruments indicating that:\n\na. Instruments are inoperative or otherwise not operating satisfactorily, or\n\nb. Signal strength or quality of the received signal falls below acceptable values.",
  "synonyms": [
    "Flag alarm"
  ],
  "references": [
    "FAA Pilot/Controller Glossary"
  ],
  "url": "https://mlchart.com/terminology/aviation/flag/"
}