I have to disagree with the statement that the UCD is a flimsy plane. Yes the landing gear and firewall area need some reinforcing but after that was done it's one of the toughest planes I've ever flown. I hit a tree with mine then had it fall 15 feet straight down from that tree and land on the landing gear and after some minor repairs it's still flying and still one of the best planes I've ever flown. The amount of fun that will be had far out weigh a little extra work when assembling the plane.