At the end of World War II, many large and small airlines in the United States had acquired the surplus Douglas DC-3s for their commercial operations. The war-weary DC-3s could only accommodate an average of 25 passengers, and airlines needed a replacement. In 1950, the Glenn L. Martin Company introduced a twin-engine short-/medium-haul aircraft, the Martin 4-0-4.
Read More Here: The Martin 4-0-4: America’s Forgotten Postwar Airliner | SimpleFlying.com
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