The last point of contact with the aircraft might not be the point of break up, if indeed that happened..... It may have travelled 90 degrees to the last known direction whilst/if the crew had time and attempted a recovery... That was part of the issue with AF447... It had turned 180 degrees from the original track by the time it hit the water, i understand
Right. But AF447 was transmitting ACARS data to AF HQ all the time until it hit the ocean. The last 4 min from 38'000 down to ZERO were indeed documented by ACARS until it turned silent. Around 250+ messages were sent. But ACARS was considered false, even in this forum, by the time it hit the internet. No one believed that the information is true.
MH370 does not seem to have sent any ACARS data. ACARS is self powered. Meaning that is like earlier poster mentioned, he would pull fire handles and switch battery off in less than 10sec, ACARS would still send coordinates and vital aircraft data.
This means that MH370 got either destroyed immediately, which on AF447 was not the case, or MH learned from AF447 incident and keeps the ACARS data for themselfs.