Douglas DC-4 American AirlinesDouglas DC 4 American Airlines airplane model. American Airlines DC 4 airplane model is a representation of the American four engine, propeller driven airliner developed by the Douglas Aircraft Company. Its military variants, the C 54 and R5D, were active during World War II, participated in the Berlin Airlift, and continued service into the 1960s. Post 1945, the DC 4 was widely used by civil airlines across the globe. Scale of 1 100, Wingspan of 13