If you take the floor out of a DC-9 and then take the floor out of a DC-3, it is hard to tell which airplane you are looking at. They are both Douglas built cable cars, meaning everything is cable controlled. Flying the 3 is really touching roots of aviation; you the pilots make everything happen. Raising the gear is a five step operation, starting engines is a “I hope its starts today and I don’t screw it up” operation, and the rudders are a primary flight control. Only one thing on the 3 is automated, and that is the Hyd pressure regulation, it automatically kicks down after reaching it peak. In the DC-9, you have to manually select low Hyd pressure. Nothing is greater than flying cross country at 3,000' AGL on clear VFR day. Of course I am lucky, I fly it for a museum and do not have to fly in the winter, night hard IFR or other bad things, but daytime flying it is all pleasure.