Originally Posted by Tex37
RR must receive many thousands of ACARS per day and only irregularities would be flagged up.
Do RR actually know which airframe the engines are fitted to or does it just send the serial number followed by mx message?
If this is the case then assuming the engines were functioning normally then nothing would have appeared abnormal and maybe RR have only just been asked for data?
An airliner going AWOL is about as irregular as it gets. Taking four days to request/gather possibly elementary data would constitute a monumental negligence.
As has been said, there must be MUCH more to this disappearance than is publicly known. Time will tell.