the boeing 717 is a twin-engine, single-aisle jet airliner, developed for the 100-seat market. the airliner was designed and originally marketed by mcdonnell douglas as the md-95, a derivative of the dc-9 family. capable of seating up to 134 passengers, the 717 has a design range of . it is powered by two rolls-royce br715 turbofan engines mounted at the rear of the fuselage.