0 0 ASDAR
1 1 ASDAR (ACARS ALSO AVAILABLE BUT NOT OPERATIVE)
2 2 ASDAR (ACARS ALSO AVAILABLE AND OPERATIVE)
3 3 ACARS
4 4 ACARS (ASDAR ALSO AVAILABLE BUT NOT OPERATIVE)
5 5 ACARS (ASDAR ALSO AVAILABLE AND OPERATIVE)
15 15 MISSING VALUE
