The Airbus A340 is a classic four-engine, long-range widebody airliner that once represented one of the best examples of intercontinental air travel. Designed alongside the twin-engine A330, the A340's four engines were a major selling point in the 1990s, offering the ultimate peace of mind for long overwater flights before twin-engine safety regulations (ETOPS) became standard. From the compact A340-200 to the world-record-holding, ultra-long-range A340-500 and the high-capacity, stretched A340-600, which was once the world's longest airliner, the family is known for its graceful appearance and quiet, smooth ride. Though overtaken by more fuel-efficient twin-engine jets like the A350, the "Four-Engined Wonder" remains an classic symbol of the golden age of long-haul aviation.