The upper girder members were attached to the upper wing spars at the tops of the innermost interplane struts and the lower ones ran under the lower wing, mounted on inverted W-form struts from the bottom of the inner interplane pairs.
The upper girder members were attached to the upper wing spars at the tops of the innermost interplane struts and the lower ones ran under the lower wing, mounted on interplane strut extensions. Around the undercarriage the skids were braced with inverted W-form struts from the bottom of the inner interplane pairs.