L-1011 TriStar is a commercial aircraft made by Lockheed Corporation between 1968 and 1984. Its trijet configuration has one engine under each wing and a third engine mounted in the junction of the tail and the upper fuselage. TriStar was the most technologically advanced commercial jet of its time, the first airliner capable of flying itself with automatic flight control system (AFCS) and autoland capability.
The aircraft has a seating capacity of up to 400 passengers and available lower deck galley and lounge facilities, with a range of over 4,000 miles.
Delta Airlines had the biggest L-1011 fleet in the airline industry, with a total of 70 TriStars. They flew in Delta's "Wide-Ride Fleet" to 79 domestic and international cities, including Delta's first trans-Atlantic and trans-Pacific destinations. Delta retired the L-1011's in 2001.