type SBS struct {
	MessageType      string
	TransmissionType int
	SessionID        int       // With dump1090, this is always 1
	AircraftID       int       // With dump1090, this is always 1
	HexIdent         string    // Aircraft Mode S hexadecimal code
	FlightID         int       // With dump1090, this is always 1
	TimeGenerated    time.Time // Protocol does not contain timezone data
	TimeLogged       time.Time // Protocol does not contain timezone data

	CallSign          string // Eight digit flight ID. Can be anything at all
	Altitude          int    // Mode C altitude. Height relative to 1013.2mb (Flight Level). Not height AMSL.
	GroundSpeed       float64
	Track             float64 // In dump1090, this is the aircraft's heading. Elsewhere, the track of the craft derived from the velocity E/W and velocity N/S
	Latitude          float64
	Longitude         float64
	VerticalRate      int
	Squawk            string // Assigned Mode A Squawk code
	SquawkChangeAlert int    // Flag to indicate the squawk has changed
	Emergency         int    // Flag to indicate the emergency code has been set
	SPI               int    // Flag to indicate the transponder ident has been activated
	IsOnGround        int    // Flag to indicate the ground squat switch is active
}