bsieker
Where does Boeing enter into it?
Malaysia Airlines did not have a health monitoring contract with Boeing. And even if, these transmissions would have gone via ACARS, which was apparently disabled/inactive/switched off/...
These "attempted messages" as you call them, were keepalive-pings to the INMARSAT network, and have nothing to do with either ACARS, Boeing, or anyone else.
the pings are only known (supposedly) because of Boeing's Airline Health Management system, and were not connected because of MAH not having that service plan. That is where the Boeing name came in
That said, you are correct in it being stated a bit confusing, and I will update the timeline. Thanks!
Edit to say the previous posts edit is as follows
INMARSAT ping received, as apparently Boeing's AHM report attempted to automatically transmit (thru Satellite)
That make more sense?