[Philip Argy]

I only saw an animated impression on the news last night, but I thought it showed the right wing of the crashed a/c impacting the tailplane of the survivng a/c (which is the only a/c the subject of the photographs below).

The only reports I've read sugested that the crash a/c was doing either a touch and go or a go around and impacted the survival aircraft on its final leg on approach.

Eyewitness accounts and the amateur video taken show the crash aircraft in a non-survivable almost vertical dive, suggesting a total loss of control - perhaps caused by an impact-triggered stall.