List of United States Air Force aircraft designations (1919–1962)

This list of United States Air Force aircraft designations (1919–1962) includes prototype, pre-production and operational type designations under the 1919 and 1924 United States Army Air Service aircraft designation systems, which were used by the United States Air Force and its predecessors until the introduction of the unified United States Tri-Service aircraft designation system in 1962. For aircraft designations after 1962, see List of United States Tri-Service aircraft designations.

Source: Wikipedia — List of United States Air Force aircraft designations (1919–1962) (CC BY-SA 4.0)