In 1929 the firm moved to Clover Field, Santa Monica, California, occupying the former Bach aircraft factory.

[1] Kreutzer developed a series of small high-winged trimotor light transport aircraft, naming each the Air Coach.

Each had a fixed tailwheel undercarriage with the two outboard engined slung from the supporting bracing struts to the high wing.

The first model was the K-1 Air Coach of late 1928 which was powered by three 65 hp (48 kW) Velie engines and accommodated four persons.

[1] The next Air Coach was the K-2 of 1929 which had a similar wing span but was lengthened by five feet to permit six persons to be carried.

After becoming derelict, it was recovered using pack animals and is now maintained airworthy by the private Golden Wings Air Museum near Minneapolis Minnesota.