at.adsb.datalink.message

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A captured aircraft datalink message.

main record

A captured aircraft datalink message.

Record Key tid Timestamp-based ID

Properties

callsign string Optional

Flight callsign as identified in the message.

maxLength: 8 bytes
capturedAt string datetime Required

When the message was received by the station.

createdAt string datetime Required

An RFC 3339 formatted timestamp.

frequencyMhz string Optional

Frequency the message was received on, in MHz (e.g. '131.550').

maxLength: 20 bytes
groundStation ref #groundStationInfo Optional

Ground station involved in the communication, if identifiable.

icaoHex string Optional

ICAO 24-bit aircraft address in hexadecimal, if identifiable.

maxLength: 6 bytes
label string Optional

ACARS message label (two-character code indicating message type).

maxLength: 2 bytes
messageText string Optional

Decoded message content.

maxLength: 20480 bytesmaxGraphemes: 2048 graphemes
protocol string Required

Datalink protocol the message was received on.

maxLength: 256 bytes
Known values: at.adsb.datalink.message#acars, at.adsb.datalink.message#vdl2, at.adsb.datalink.message#hfdl
receiverDid string did Optional

DID of the receiver that captured this message.

registration string Optional

Aircraft registration, if identifiable from the message.

maxLength: 10 bytes
sublabel string Optional

ACARS sublabel for further message classification.

maxLength: 4 bytes
View raw schema 
{
  "description": "A captured aircraft datalink message.",
  "key": "tid",
  "record": {
    "properties": {
      "callsign": {
        "description": "Flight callsign as identified in the message.",
        "maxLength": 8,
        "type": "string"
      },
      "capturedAt": {
        "description": "When the message was received by the station.",
        "format": "datetime",
        "type": "string"
      },
      "createdAt": {
        "format": "datetime",
        "type": "string"
      },
      "frequencyMhz": {
        "description": "Frequency the message was received on, in MHz (e.g. '131.550').",
        "maxLength": 20,
        "type": "string"
      },
      "groundStation": {
        "description": "Ground station involved in the communication, if identifiable.",
        "ref": "#groundStationInfo",
        "type": "ref"
      },
      "icaoHex": {
        "description": "ICAO 24-bit aircraft address in hexadecimal, if identifiable.",
        "maxLength": 6,
        "type": "string"
      },
      "label": {
        "description": "ACARS message label (two-character code indicating message type).",
        "maxLength": 2,
        "type": "string"
      },
      "messageText": {
        "description": "Decoded message content.",
        "maxGraphemes": 2048,
        "maxLength": 20480,
        "type": "string"
      },
      "position": {
        "description": "Aircraft position at the time of the message, if included.",
        "ref": "at.adsb.flight.defs#position",
        "type": "ref"
      },
      "protocol": {
        "description": "Datalink protocol the message was received on.",
        "knownValues": [
          "at.adsb.datalink.message#acars",
          "at.adsb.datalink.message#vdl2",
          "at.adsb.datalink.message#hfdl"
        ],
        "maxLength": 256,
        "type": "string"
      },
      "receiverDid": {
        "description": "DID of the receiver that captured this message.",
        "format": "did",
        "type": "string"
      },
      "registration": {
        "description": "Aircraft registration, if identifiable from the message.",
        "maxLength": 10,
        "type": "string"
      },
      "sublabel": {
        "description": "ACARS sublabel for further message classification.",
        "maxLength": 4,
        "type": "string"
      }
    },
    "required": [
      "protocol",
      "capturedAt",
      "createdAt"
    ],
    "type": "object"
  },
  "type": "record"
}
groundStationInfo object

Identification of the ground station involved in the datalink communication.

Properties

id string Optional

Ground station identifier (e.g. HFDL station ID, VDL2 ground station address).

maxLength: 32 bytes
name string Optional

Human-readable ground station name (e.g. 'Shannon', 'Reykjavik').

maxLength: 640 bytesmaxGraphemes: 64 graphemes
View raw schema 
{
  "description": "Identification of the ground station involved in the datalink communication.",
  "properties": {
    "id": {
      "description": "Ground station identifier (e.g. HFDL station ID, VDL2 ground station address).",
      "maxLength": 32,
      "type": "string"
    },
    "location": {
      "description": "Geographic position of the ground station.",
      "ref": "community.lexicon.location.geo",
      "type": "ref"
    },
    "name": {
      "description": "Human-readable ground station name (e.g. 'Shannon', 'Reykjavik').",
      "maxGraphemes": 64,
      "maxLength": 640,
      "type": "string"
    }
  },
  "type": "object"
}

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