I suspect some journalists (and others in the mix) are following this thread and at times discover fields of follow-up inquiry.
SO:
Summary:
ACARS reported at 1:07 (maybe with the left turn pre-programmed waypoint maybe not
F>O> (or someone) signed off 1:19 no mention of problems
ACARS DID NOT "send" the scheduled 1:37 update
BUT it was still ON (CB not pulled or circuits disrupted) for all latter handshake attempted pings, with the satellite
Leaves this technical question i think:
What would be the causative factor that, with ACARS ON, the 1:37 report (and others) was skipped?
How/what would switch ACARS to satellite from other broadcasting method?