The first Max Gerner aircraft was the lightweight multipurpose Gerner GI built in 1928. It was a biplane with a frame made of duralumin tubes (which was covered with fabric), equipped with an Anzani 3Y engine with a power of 35 hp, driving a two-blade Reed duralumin propeller.

In October of the same year, the aircraft was demonstrated at the ILA aviation exhibition in Berlin. The following year, the aircraft was remotorized - the engine was replaced with a 37 hp ABC. September 25, 1929 Gerner GI piloted by Erich Wigmeyer crashed. The damage was so severe that it was decided not to rebuild the aircraft.
Type Two seat sportplane
Engine 1 Anzani 3Y with a 2-blade Reed dural propeller
Dimensions Length 5,2 m , height 1,8 m ,  span 6,0 m , wing area  11,40 m2 ,
Weights Empty 200 kg, loaded  400 kg, max. take off weight  
Performance Max.. speed 150 km/h , cruising speed 135 km/h , landing speed 55 km/h, range 600 km, endurance  , service ceiling 2600 m  , climb
Type Werk.Nr Registration History
"Frankfurt". Changed to an ABC engine in 1929. Crashed on September 25 1939