The DC-9 quickly became popular because of its economical operation and efficient design. The McDonnell Douglas DC-9-20 ...

Read more: The 10 Most Iconic Airplanes In Aviation History, Ranked The DC-9 was a small popular regional airliner, initially ...

Contractor: Boeing Aircraft Corporation (formerly the McDonnell Douglas Corporation ... Adapted from the civilian DC-9 airliner, the C-9 Skytrain is used primarily for personnel transport ...

before being absorbed into major defense contractor McDonnell Douglas in 1967. McDonnell worked through various designs when creating the Moonbat, ultimately settling on a rather ambitious ...