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Old 16th Mar 2014, 16:48
  #4632 (permalink)  
Ian W
 
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Originally Posted by PA28Viking
How have they determind that VFR ACARS was disabled before the handover comms?

MH370 reached its cruising altitude FL350 at 17.03 UTC. At 17.07 UTC (01.07 local) the last RR (TOC) message was transmitted).
After that no RR ACARS messages was to be expected for a long time.

So how do they conclude 'disabled' and not just 'not transmitting'?

I would say the ACARS could have been disabled around the same time as the transponder - at 17.21 UTC.
This is the reason they are saying that ACARS was 'deliberately turned off'. It would appear it went through a tidy log off of some sort at 1:07 local. Had it just been failed by circuit breaker then it would just not have reported any more and there would be no time of its disconnect. A tidy shut down means it was not (name a disaster) and that as the briefings have repeatedly been told 'deliberately turned off'. That the Malaysian authorities can repeat very simple things and be continually disbelieved only adds to the confusion.
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