The DC3s that I worked on had the entry/cargo door on the left side. May be it was there so the Captain could see when the Pax and cargo had finished loading, after all you cant trust the co-pilot or loady can you.

:)

I am sure the astronauts would prefer french cooking, but then again, who knows.

OK, so can anyone explain why most helicopters have their pax/loading doors on the starboard side?!