Easily the most famous airliner of all time, the  DC-3 was a development
      of the DC-2.  First flown in 1935, the DC-3 had already gained a
      dominant position in U.S. commercial aviation before World War II.
      The U.S. Army designation for the DC-3 was the C-47; the
      U.S. Navy
      designation was the R4D.  During WW II the C-47 was used to carry
      cargo, airborne troops and tow gliders.  U.S. Army C-47's acquired the
      name  "Skytrain".  The British used the name 
      "Dakota".  The aircraft was also nicknamed the "Gooneybird".
      The C-47 participated in the Berlin Airlift and was used as a gun-ship
      in Vietnam.