The Douglas XA-2 was a United States prototype attack aircraft converted from the last Douglas O-2 observation plane in the spring of 1926 by Douglas Aircraft. The reason for the choice of nomenclature lay in the prior existence of the Cox Klemin A-1 ambulance plane and possible confusion caused by the similar designations. There was also an A-2 ambulance plane - a modification of the Fokker T-2 (Type F-IV) - but it had been decommissioned before the launch of the Douglas A-2.
Made by Douglas Aircraft Company.
It is the successor of the Douglas O-2 .