A memorable day fro the drivers. The fwd attachment fails in overload, the aft attachment point to the inboard wing root rib crushes, and the wing remains on as the main spar wing to carry throughs structure bends without breaking. That is a neat trick, good choice of materials. A ~13' lever arm and force is persuasive to aircraft structure.Force transfer was reduced through the progressive failure of the wing tip, frangible tips are handy to have.

Looks like he was an accident waiting to happen - here's an earlier pass on the same display. Don Bullock mk2...

For those who can't see embedded videos (like me, why, mods?) the youtube link is _3N65EMji-g copy and paste into the YT search window

Lucky Guys in Chipmunk!