Junkers F.13 – Walk Around

В Юнкерс Af 13 (also known as the F 13) was the world’s first all-metal transport aircraft, developed in Germany at the end of World War I. It was an advanced cantilever-wing monoplane, with enclosed accommodation for four passengers. Over 300 were sold. It was in production for thirteen years and in commercial service for almost twenty.

Източник: Юнкерс Af 13 в Уикипедия