To this day the Staaken bombers remain some of the largest wooden aircraft ever made. Whilst technically advanced (one version even experimented with high altitude supercharging) they ultimately proved less than successful in the eyes of the German staff, primarily due to lack of power for such a large aircraft and bomb load. In addition to the eight man crew, a ground staff of 42 were needed just to get the plane out of the hangar.

Zeppelin Staaken R.VI

Note, model is for FS9 only

Screenshot courtesy of Roger Law