The production variants differed from each other in minor equipment details. The most numerous variants were the Fw 44C, Fw 44D and Fw 44F, with all three models utilizing the same Siemens Sh 14a engine. The final production Fw44J model had a 160 hp Siemens Sh 14a-4 seven-cylinder radial engine.
Fw 44A
The Fw 44A was powered by a 150hp Siemens Sh14a engine, and was used for flight tests. This model was in production until the end of 1932.
Fw 44B
The improved Fw 44B first appeared in 1933, with production commencing in 1934. The Fw 44B, had an Argus As 8 four-cylinder inverted inline air-cooled engine of 90 kW (120 hp). The cowling for this engine gave the plane a more slender, aerodynamic nose. The other change was in the extension of the fuselage from 6.6 to 7.3 meters, which was tested on this model.
Fw 44C
This model was used extensively by the Luftwaffe at advanced training schools throughout the Second World War. The Fw 44C, was powered by the Siemens Sh 14a engine, which offered the best overall performance.
Fw 44D
The D model was same as the Fw as 44 C, but with different exhaust manifold. The plane got a small luggage compartment made of fabric, which was attached to the rear cockpit. From 1934 onwards, improvements were taken into series production. Due to the high demand for this model, it was temporarily produced in other plants (Bücker Flugzeugbau – 85, AGO – 121, and an additional 515 planes under license). The Luftwaffe ordered some 1,600 examples of this model.
Fw 44E
Basically identical with to the D model, it was equipped with an Argus As 8 engine. It was built in limited number, only 20, in 1934.
Fw 44F
An upgrade of the D model. With some luggage compartment modifications, and the replacement of the rear pad with a landing wheel.
Fw 44H
Only one plane of this model was produced in 1936, and was used only for testing. This model was equipped with a six-cylinder engine (118hp).
Fw44J
The J model was mainly intended for export and was equipped with the 160 hp Siemens Sh 14a-4 seven-cylinder radial engine. This model was demonstrated in Sweden in late 1935, and in February 1936. The testing resulted in a license agreement between the Swedish aviation administration and Focke-Wulf on September 29, 1936. Two test aircraft were ordered, receiving the Swedish designation P2.
