Quote Originally Posted by GraniteQuarry View Post
The suggestion is a localised fire/detonation lead to loss of avionic control. No question the aircraft went nose down hard into the ground rather than broke up when airborne.
Nah. It'll be the MCAS issue that Lionair had. There are reports all over the web that the type is prone to pitch down when the sensors get mixed up. Many pilots saying they've had to intervene.

Boeing have built a new aircraft but 'grandfathered' the approvals. It's appears quite naughty!