DC3 passenger entrance doors. left/right/or on both sides together?
DC3's in 1940 had passenger entrance door on the right hand side of the fuselage whereas most military Dakotas and civilian DC3's in Australia, anyway, had the passenger door on the left side of the fuselage (facing forward) Is it possible that the DC3 was designed to have two passenger doors at the rear of the fuselage - in other words customer option such as one on the left OR right or both left and right?