md88MD-88 - similar to the MD-8283 with various technical and cockpit electronics improvements ; All models include two exit doors over the wing. All models have forward cabin doors on both sides of the fuselage. All models, except the MDTitle: McDonnell-Douglas MD-88 MD-90 The MD-80 series of airrs was a development of the DC-9 and initially known as the DC-9 Series 80. It had a stretched fuselage, enlarged wings