This explanation given by Tim Farrar is easy to understand. It seems that ACARS is a reporting software utility. It probably went offline at the same time as the ADS-B for whatever reason. But the actual transmitter device was still functioning and responding to the Inmarsat hourly pings for a considerable time.
http://www.themalaysianinsider.com/s...ngs-tim-farrar
http://www.themalaysianinsider.com/s...ngs-tim-farrar
Comment