The Douglas O-38 is an observation airplane used by the United States Army Air Corps in the 1930s and early 1940s.
Between 1931 and 1934, Douglas built 156 O-38s for the Air Corps, eight of which were O-38Fs.
Some were still in service at the time of the Pearl Harbor Attack in 1941.
The O-38 is a modernized derivative of the O-25, itself a re-engined variant of the earlier Douglas O-2.
Data from McDonnell Douglas aircraft since 1920 : Volume I,[3] United States military aircraft since 1908[4]General characteristics Performance Armament