The Lockheed L-749 Constellation is a four-engine propeller-driven airliner that first flew in 1947. It was designed for long-distance travel and featured a distinctive triple-tail design, which contributed to its aerodynamic efficiency. The aircraft could accommodate up to 60 passengers and was known for its spacious cabin and comfortable seating. The L-749 was an improvement over earlier models of the Lockheed Constellation series, offering enhanced performance and range. It played a significant role in commercial aviation during the late 1940s and 1950s, serving various airlines, including Pan American World Airways and Trans World Airlines.