The McDonnell 188E Stol Transport, 1980, faded color

“The Breguet 941 was a French four-engine turboprop short takeoff and landing (STOL) transport aircraft developed by Breguet in the 1960s. Although widely promoted, both by Breguet in France and by McDonnell Aircraft and McDonnell Douglas in the United States, it was not built in large numbers; only one prototype and four production aircraft were built.”

“McDonnell Aircraft acquired a production licence for the 941 in the United States and began marketing the aircraft with minimal changes as the McDonnell 188. The company also promoted an upgraded version with a circular-section pressurised fuselage, uprated engines, and other enhancements as the 188E. Marketing of the 188E continued after McDonnell merged with Douglas Aircraft to form McDonnell Douglas, and the merged company proposed to build an even larger and more powerful version as the McDonnell Douglas 210”