Armstrong A+ System TC FuselageThe Armstrong TC Hex fuselage is a ground breaking work of art in terms of engineering and design Armstrong A+ System TC Fuselage The new system locks the mast and wings to the A+System TC Fuselage while maintaining our unique flex characteristics. The flex you can feel in the system comes from the carbon titanium fuselage itself and our tapered Reactive Flex Mast construction, which is at the heart of the smooth flowing Armstrong feeling. The new