I am sure Chip might explain on later, but he was using an experimental wing attachment system instead of the nylon bolt and nut, it does not have anything to do with the wing structure, wings perfectly fine, the attachment failed and the wing came off.

On Wolfgang, he retired from his proffesion, he will keep competing in F3A, and as he told me, now he has more time to fly, so probably he will get even better, plus more new designs on the works.

Best regards

Alejandro P.