Sometimes the terms "longeron" and "stringer" are used interchangeably. The designers did this by placing a plywood fitting on the upper Longeron. Each mainwheel was mounted on a steel tube leg hinged on the lower fuselage longeron. The nearly rectangular tailplane was mounted on the upper longeron. Its triangular tailplane was mounted on the upper longeron with ground-adjustable incidence. The corroded right longeron has been completed and the left one is being restored. The hull was a normal frame and longeron design with chines. A pair of parallel struts braced the spars to the lower longeron on each side. The semi-monocoque fuselage structure is made of stressed skin, frame and longeron. In engineering, a longeron and stringer is the load-bearing component of a framework. In 1941, he remarried Kathleen Longeron of Auckland and had another son. The longeron system also requires that the fuselage frames be closely spaced (about every ).