In the mid-1930s, the DZR was a commercial airline based in Frankfurt that operated zeppelins in regular transatlantic revenue service, including the famous LZ 129 Hindenburg. Following the Hindenburg disaster in 1937 the DZR stopped transatlantic service, although it launched a new airship in 1938 and had another on order. Plans for more operations ended at the outbreak of World War II and its zeppelins were scrapped in 1940.