"Kobra" wrote:

Is anyone else out there wondering what in the heck happened here?
For instance, what about the TCAS systems on both these planes?

The news reports so far are very vague. Not sure if I would put much
credence in any of the so-called facts released so far.

One of the Brazilian investigators was quoted as saying the transponder on
the Legacy was turned off at some point, and that it was flying northwest
at 37,000 feet, instead of 36,000 feet that had been authorized by ATC.

Other reports say that one ATC center was handling the Boeing, and another
handling the Legacy. The area where they supposedly collided, over the
jungle, does not have good radar coverage, so they might not have even been
tracked on radar.

Did the Embraer jet hit the 737 in it's Achilles heel
to bring in down nose first while the smaller jet landed without
incident or injury?

The wreckage is scattered over a wide area, suggesting a breakup.