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 MDThe MD-88 has wider than usual aisles in the coach cabin at 22 inches. Maximum cruise speed for the MD-88 is 543 mph, 874 kmh, or 472 knots. Type Rating. Pilots must earn their type