The Messerschmitt M 23 was a sport and training aircraft, which was designed in 1928 by the German aircraft designer Willy Messerschmitt and released by the Bayerische Flugzeugwerke.
The M 23 was built as an enlarged version of the M 19 Originally designed as a competitive aircraft, found the machine quickly widespread and achieved a number of remarkable achievements, such as winning the flight across Europe in 1929 and 1930. However, survived no aircraft of World War II.
The M 23 was built in three versions with a variety of engine options:
- The M 23a was used primarily for testing purposes; it was sold only a small quantity of this aircraft. The first two machines were underpowered with twin-cylinder boxer engines ABC Scorpion with 38 hp and so. The third machine (D -1571 ) was equipped with five-cylinder radial engine Armstrong Siddeley Genet 80 bhp, which showed adequate performances from this series and the only one with Theo Croneiss won the 1929 East Prussia flight. After that followed six machines with other engines such as the nine-cylinder Salmson 9 AD with 45 hp.
- From the M 23b, the end of March 1929 stood out for the first time until the end of 1931 more than 70 units were sold. It was equipped with more powerful engines such as the five-cylinder radial engine with 81 hp Siemens Sh 13 and was recognized by the rounded fuselage and wing tips. Apart from aerodynamic improvements and the structure has been strengthened for the more powerful engines. Fritz Morzik won with an M 23b ( D- 1673 ) the flight across Europe in 1929.
- From the M 23c, which was specially developed for the Competition of the Euro- round flight 1930, eleven were built. They had, in contrast to previous versions, a cockpit with glass dome and a new hull, which was the front of a light metal, and were driven by a Siemens & Halske Sh 13 radial engine with 81 hp or a 100 hp Argus As 8. With a M 23c (D - 1883) won again Fritz Morzik 1930 flight across Europe.
It was a sport aircraft in the form of a single-engine, two-seat low-wing cantilever and with fixed landing gear in wood construction with folding wings.