All we can say at this point is that there was not a catastrophic failure. |
Something went wrong at some point. |
The destruction of the airplane certainly can hinder the investigation, but even with destruction as we've had with this airplane, there are clues in the wreckage that we can gather. |
The video shows it in a near-vertical attitude when it impacted the ground. Obviously the thrust of the investigation is to try to figure out how it got into that attitude. |