LZ 127 Graf Zeppelin (Deutsches Luftschiff Zeppelin #127; Registration: D-LZ 127) was a German-built and operated, passenger-carrying, hydrogen-filled rigid airship which operated commercially from 1928 to 1937. It entered commercial service in 1928 and became the first commercial passenger transatlantic flight service in the world. It was named after German airship pioneer Ferdinand von Zeppelin, who was a count (Graf) in the German nobility. The airship made 590 flights covering more than 1.7 million kilometers (over 1 million miles). It was designed to be operated by a crew of 36 officers and men. The LZ 127 was the longest rigid airship at the time of its completion and was only surpassed by the USS Akron in 1931. It was scrapped for fighter plane parts in 1940.