{
  "messageId": "MSG-20250314-001234",
  "messageType": "ACARS",
  "registration": "N12345",
  "airlineCode": "AA",
  "flightNumber": "AA100",
  "timestamp": "2025-03-14T10:30:00Z",
  "content": "/AA AA100 BOS JFK 1030",
  "direction": "DOWNLINK",
  "origin": "BOS",
  "destination": "JFK"
}