I had a throttle servo slip loose and send the engine into full throttle on an inverted dive. Thus sending the Kadet into the ground at around 100 mph with a os max 46 ax! the plane was destroyed from the second former forward, but the rest survived, the doubled ply absorbed the energy and transferred it di- lineally. Thus preventing the total explosion of balsa. I rebuilt the nose in about 3 days. Back in the air this weekend.