These struts were laterally stabilized with a near horizontal strut on each side, joining the upper fuselage and the upper end of the rear member of the N. In plan the wing was straight tapered with blunt tips and included a trailing edge cut-out to improve upward vision from the cockpit.

The prototypes differed in the way this covering was applied; on one the grain ran diagonally, on the other longitudinally.

The horizontal tail was mounted at mid-fuselage, with a straight-edged, unswept tailplane bearing overhung, balanced elevators with outward increasing chord.

Both prototypes had conventional undercarriages with a rigid axle mounted to the lower fuselage by V-form struts.

[1][2][note 1] The main difference between the two prototypes was in the engines, both fully cowled rotaries.