North American P-51 Mustang
One-hundred-seventeen days. Almost four months. What could you build in one-hundred-seventeen days? Perhaps I should rephrase that: what could you build in one-hundred-seventeen days on a government contract? Certainly not an entire aircraft, from the ground up, from scratch-paper to rolling it out of the hanger? But it has been done. The North American P-51 Mustang was ordered just one-hundred-seventeen days before the first prototype was rolled out. That’s an incredible achievement right there. Before the aircraft even got off the ground, putting all of its air superiority aside, the entire plane was designed and put together in less than four months. It was flying less than two months after that. ...