I have come into this one late, as I understand it OBSLF has hit the nail directly on the head, and I believe that checks are to be made on the fleet, I also understand that there are queries regarding the correct jigging on the elevators after maintenance on more than one operator, in particular the methodology used to assess the correct settings. My source indicates that FOD or other external influences at the time of the accident are unlikely to be the main cause.
It will be interesting to see where this ball ends up, with Raytheon/Beech for allegedly designing a system that can be set up incorrectly, or for the operators who allegedly may have done so. I am also led to believe that the crew are unlikely to be at fault for this accident. RIP all those involved.