Originally Posted by
Wannabe Flyer
Any News on the CVR?
It's worth noting - especially in the sea of speculation above! - that, so far as I am aware, there's no specific news on the FDR
data either. Nothing that Boeing or the FAA have said so far is explicitly linked to the FDR for this airframe. The FAA directive
could be part-based on the FDR data; but it could equally - imho - be based on what is known about the flight from ATC data and communications, plus paperwork and witness statements about the prior difficulties that this particular a/c had recently encountered. So, previous flight crews could all have said that, having gone to manual flight following sensor disagree alerts, they then encountered strong and unexpected nose-down stab trim, uncommanded by them.