Airbus A330 US AirwaysAirbus 330 US Airways airplane model. The A330 300 is the biggest member of Airbus' twinjet family and is closely related to the four engined long range A340 with which it shares near identical systems, airframe, flightdeck and wings, the only major difference being the twin (versus four) engine configuration. The A340 and A330 were launched simultaneously in June 1987. Although developed in parallel the A330 300 made its first flight after the A340,