The F-9 plans have step by step manuals, full size layouts for ribs, bulkheads and small parts. Built of wood and plywood for ease of construction, no expensive or unique tools are required. The are a minimum of metal fittings - under 32 fittings assemblies. Equipped with maintenance free Delrin bearings and stainless steel hardware for control surfaces, the wing and tail easily removable.

The most important modifications are:
A changed wing design. By moving the crank inboard, Chris Falconar could make the outer parts to fold inward and make it trailerable. This folding mechanism was a option. Chris Falconar also changed the spar and wing rib design. The original Jodel spar is not the simpelest to construct due to the washout in the wing profile. The Falconar spar is more straightforward and uses different ribs to create the washout.

There are options for different tail configurations.
The building time is 1500--3000 hours.