Could be windshear...The plane hit the ground pretty hard, I'm guessing it only got in the air again from the force of the bounce or maybe the pilot applying full power in a go around attempt, and then it went nose down, hit the runway even harder, then the left wing dropped....possibly because of the force of the bounce cause the left main undercarraige to collapse.....Just a theory. Strong winds were reported at the time of the crash.
Anybody know if ATC was up at the time of the crash and if so could they post a file?