- Dec 22, 2009
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All planes are monitored. I just can’t find where I saw that every commercial plane’s in flight position is known at all times and it can’t be turned off by the pilot.
ACARS can be turned off, SATCOM can be disabled. At least back in 2014 that was the case. What can't be turned off is the satellite link (hourly handshake) unless its power source is shut down (left hand bus in the 777). This must have happened as disabling SATCOM normally would result in a message being sent to the airline.