Freddie To was a member of the Kremer prize committee who started his own project to produce a human-powered aircraft to compete for the prize. Its structure comprised a wooden frame covered with heat-shrunk Solarfilm model aircraft film. The wing was built in three sections, a centre section and two outer wing panels to simplify storage and transport. The wing spar is a laminated spruce girder box-spar design. The tail surfaces are quickly removable for storage. The resulting aircraft, at , proved too heavy for human-powered flight and so To converted it to solar power.
