acdii

It was an ARF and the joiner box was poorly designed. Instead of the webs going top to bottom and glued tight to the top and bottom spars, they were the same width as the distance between the spars and not glued to them. After several flights I guess the joints weakened enough that after a roll the left wing parted company with the rest of the plane.

I had pics of it somewhere. All that survived were the wings beyond the joiner box, and the fuse from the cockpit back, the rest became toothpicks.