The pilot sat below the upper wing just behind the rear spar and with a cut-out for visibility.

The wings are built around an aluminum I-beam spar with a lighter rear spar.

The rear spar had then failed, allowing the entire outer part of the wing to separate from the aircraft and drift slowly to the ground.

Only the control surfaces and the trailing edge of the wing behind the rear spar were fabric covered.

Both were sandwiched in between the main and rear main spar.

A king post was fixed to the rear spar toward the tip where the outer bracing wires were fixed.

The wing trailing edges behind the rear spar were fabric covered.

Each wing were hinged at the rear spar and they could be folded for storage or transport.

Its tailbooms converged in elevation to meet at the rear spar of the tailplane.