The Extra Flugzeugbau EA300 is a two-seat aerobatic monoplane capable of Unlimited category competition. It was designed in 1987 by Walter Extra, an award-winning German aerobatic pilot and built by Extra Flugzeugbau.
The single-seat Extra 300S flew on 4 March 1992. It features a wingspan reduced by 19½ in (50 cm) and is fitted with larger ailerons.
The Extra 300 has a welded steel tube fuselage covered in aluminum and fabric. The mid-set wing has a carbon fiber composite spar and carbon composite skins. A symmetrical airfoil, mounted with a zero angle of incidence, provides equal performance in both upright and inverted flight. The landing gear is fixed taildragger style with composite main legs and fiberglass wheel pants. The powerplant is a fuel-injected Lycoming AEIO-540 which produces 300 horsepower (224 kW).
The Extra 300 is stressed for ±10 G with one person on board and ±8 G with two. Some Extra 300's are certificated in the Experimental Category in the U.S., while others are certificated in the Aerobatic category.
Source: Wikipedia, "Extra EA-300", available under the CC-BY-SA License.