The Navy acquired a batch of six D-29As in 1930 and gave them the designator NT-1. A-8588 was the last of the six to be delivered and served until 1937 at NAS Pensacola and Quantico before before retired. In reality this is an unknown D-29 that was rather neglected in civilian hands for many years before being rescured, restored and put on display at the super National Naval Aviation Museum.