Damn, I guess all we get from this preliminary is that we don't know what happened yet. Clearly the pilot believed almost right away that he had a problem, and within 5 seconds events had caused it to begin rapidly loosing alt.
I don't know the accuracy range of the tracking data, but to my layman's eye, the tracked flight path by ADB seems to also rule out those early reports/speculations that the retail building was the cause/major contributing factor of the crash? I'm not saying building that there was a brain trust moment, just that looking at the VS numbers, and path, it seems that if that building wasn't there, it'd have just come down on the edge of or in the freeway cutting?