Military versions of the plane, the C-54 and R5D, served during World War II, in the Berlin Airlift and into the 1960s. From 1945, many civil airlines operated the DC-4 worldwide. The DC-4/C-54 proved a popular and reliable type, 1245 being built between May 1942 and August 1947, including 79 postwar DC-4s. Several remain in service as of 2014. One current operator is Buffalo Airways of Yellowknife, Northwest Territories. British company Aviation Traders converted a number of DC-4's as a cargo and car ferry with a modified nose with a raised cockpit to allow cars to be loaded more easily. It was called the Carvair. For more history of the DC-4/C-54, click here. Aviation Traders Carvair
