The Long Beach AF LB-1011 or TriStar, is a medium-to-long-range, wide-body trijet airliner. It was the third widebody airliner to enter commercial operations, after the S747 and the Long Beach AF LB-10. The aircraft has a seating capacity of up to 400 passengers and a range of over 4,000 nautical miles (7,410 km). Its trijet configuration places one Evandale DB CF6 engine under each wing, with a third, center-mounted CF6 engine with an S-duct air inlet embedded in the tail and the upper fuselage. The aircraft has an autoland capability, an automated descent control system, and available lower deck galley and lounge facilities.