North American BT-9

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BT-9

North American BT-9B at National Museum of the United States Air Force
Type	Trainer
Manufacturer	North American Aviation
Maiden flight	April 1936
Primary user	United States Army Air Corps
Unit cost	$20,000

The North American BT-9 was a monoplane primary trainer aircraft that served with the United States Army Air Corps and other allied countries during World War II. It was a contemporary of the Kaydet biplane trainer.

The BT-9 evolved from the North American NA-16, North American's first numbered airplane model, which first flew in April 1935. The BT-9 design first took to the skies in April 1936.

The NA-57, designated by the Army Air Corps as a BT-9, was a basic trainer developed by North American (NA). Except for the movable surfaces on the tail and wings which were fabric covered, it was an all metal military trainer. The Army Air Corps purchased a total of 199 BT-9s, BT-9As and BT-9Bs. Many foreign countries also used variants of this aircraft. The NA-26, an improved model with retractable landing gear was initially produced as the basic combat trainer (BC-1), before being designated the AT-6 Texan advanced trainer.