The fuselage comprises several sections, the principal being the one-piece central and stub-wing assembly section. The front fuselage, composed of the pressurised cabin, the airbrake below the pressure flooring and the radar compartment, and its hinged radome are mounted upon four attachments on the forward face of the front spar. Various electrical compartments are located aft of the front spar, above the wing, which are accessible through hatches. The engines are installed within the main fuselage aft of the main box; they could be removed from the fuselage for servicing via detachable panels on the upper fuselage surface. Sections of the fuselage skin were chemical milled while other parts were machine milled. The powered folding wing made use of a pair of wing-fold joints which involved a total of six main attachment points.