I was the one putting it out in the picture.............. The L39 did a fast low pass and hit the runway (not particularly hard). I think this impact broke the turbine mounting rail which caused the turbine to be out of alignment in the plane as it did the final circuit. The plane was internally on fire as it approached landing and when it landed on the grass the fuz broke and then the big fire. I grabbed an extinguisher and by the time I got across the runway it was well alight. Airframe was a total loss. Some of the gear seemed ok however. Sad loss but these things happen