Originally Posted by
X-37
How can they be sure that communications weredeliberatelydisabled?
It could be that a chain of events cut the ACARS, transponder and VHF and that chain caused them to turn back but the crew were themselves overcome by the events.
Exactly my post at 23:50 UTC last night that was deleted, so sadly yours and mine may now also be deleted. Just before the mods do that could someone with the 777 / electronics expertise
please categorically confirm that the ACARS system and later the transponder / ADS-B systems can
ONLY go offline by the "deliberate act of someone on board". The Malaysian authorities are so definite on this point they are categorically ruling out equipment failure / fire / etc.