The Boeing 717 is an American five-abreast narrow-body airliner produced by Boeing Commercial Airplanes. The twin-engine airliner was developed for the 100-seat market and originally marketed by McDonnell Douglas in the early 1990s as the MD-95 until the company merged with Boeing in August 1997. It was a shortened derivative of McDonnell Douglas’ successful airliner, the MD-80, and part of the company’s broader DC-9 family. Capable of seating up to 134 passengers, the 717 has a design range of 2,060 nautical miles [nmi]. It is powered by two Rolls-Royce BR715 turbofan engines mounted at the rear of the fuselage.

A narrow-body aircraft or single-aisle aircraft is an airliner arranged along a single aisle, permitting up to 6-abreast seating in a cabin less than 4 metres (13 ft) in width. In contrast, a wide-body aircraft is a larger airliner usually configured with multiple aisles and a fuselage diameter of more than 5 metres (16 ft), allowing at least seven-abreast seating and often more travel classes.