Cessna T-41 Mescalero
North American Aviation’s design of a twin-engine medium bomber was approved by the Army Air Corps in September 1939, and the prototype made its maiden flight less than a year later on 19 August 19.
Boeing PT-17 Stearman
North American Aviation’s design of a twin-engine medium bomber was approved by the Army Air Corps in September 1939, and the prototype made its maiden flight less than a year later on 19 August 19.
North American B-25 Mitchell
North American Aviation’s design of a twin-engine medium bomber was approved by the Army Air Corps in September 1939, and the prototype made its maiden flight less than a year later on 19 August 19.
North American T-6 Texan
North American Aviation’s design of a twin-engine medium bomber was approved by the Army Air Corps in September 1939, and the prototype made its maiden flight less than a year later on 19 August 19.