The Junkers G.38 was a large German four-engined transport aircraft which first flew in 1929. Two prototypes were constructed in Germany. Both aircraft flew as a commercial transport within Europe in the years leading up to World War II.
During the 1930s, the design was licensed to Mitsubishi, which constructed and flew a total of six aircraft, in a military bomber/transport configuration, designated Ki-20.
The G.38 carried a crew of seven. Onboard mechanics were able to service the engines in flight due to the G.38's blended wing design which provided access to all four power plants.