MUSE AIR DC-9-51 N677MC

DC-9-50

The McDonnell Douglas DC-9-50 was the largest and final production model of the DC-9 family, introduced in 1975 to meet demand for higher-capacity regional jets. Powered by two Pratt & Whitney JT8D-17 turbofan engines, each producing 16,000 lbf (71 kN) of thrust, it delivered improved performance and fuel efficiency. The fuselage was stretched by 2.46 meters (8 feet 1 inch) over the DC-9-40, allowing seating for up to 139 passengers in a typical single-class layout. With a maximum takeoff weight of 54,880 kg (121,000 lbs), a cruising speed of 880 km/h (475 knots), and a range of 2,800 km (1,500 nautical miles), the DC-9-50 offered reliable short- to medium-haul service. Airlines such as Northwest, Finnair, and SAS operated it extensively.

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