the aircraft is made from riveted sheet aluminum with a rounded turtle deck and flat sides and bottom skins. its span wing employs a naca 64a212 airfoil at the wing root, transitioning to a naca 64a210 at the wingtip. standard engines used include the lycoming o-320, the lycoming o-360 and the fuel-injected lycoming io-360 four-stroke powerplants. standard fuel capacity is 25 us gallons, but optional wet wings increase the fuel capacity to 61 us gallons. several other fuel tank options are available. a folding wing option may be installed.