[2] Like other members of this family, the Model 4000 is an unequal-span, single-bay, staggered biplane of conventional design.

[2][4] Travel Air built fourteen Model 4000s in 1927, and the design received type certificate ATC-32 in April 1928.

[5] Starting with the Model B-4000, some variants had a new "outrigger" style undercarriage, where oleo struts were attached outboard of the main undercarriage units, connected to struts forward of the lower wing.

D-4000s represented World War I Nieuport fighters in The Dawn Patrol (1930), Hell's Angels (1930), and Young Eagles (1930).

[12] This is a partial list of surviving examples of the Model 4000 and its subtypes, confined to aircraft that are still in commercial use, in museums, or in some other way notable.