Shocking video of crash - it does seem to me that there is common thread of mis-calculated altitude in this and previous airshow crashes ( Mosquito, RR Spitfire, P-38 Lightning).
I am not a pilot or airshow organiser but isn't this something that could be avoided? (and I suppose it more frequently is, thinking of the number of successful airshows).
I certainly mean no disrespect to the pilots, in making these comments, but just wonder how such a basic thing seems to repeat.