What is a BT-9?

The BT-9 design first flew in April 1936. The wing and tail control surfaces were fabric-covered, as well as the sides of the fuselage from just behind the firewall to the tail. The remainder of the aircraft was metal-covered and featured fixed (non-retractable) landing gear.

What kind of landing gear does a BT-9 have?

The remainder of the aircraft was metal-covered and featured fixed (non-retractable) landing gear. The Army Air Corps purchased a total of 199 BT-9 s, BT-9A s and BT-9B s. Many foreign countries also used variants of this aircraft under North American’s NA-16 designation.

What is the difference between The NJ-1 and the BT-9?

The NJ-1 was used by the United States Navy for a similar role, but was closer to the one off BT-10. The BT-9, designated NA-19 by the manufacturer, evolved from the North American NA-16, which first flew in April 1935. The BT-9 design first flew in April 1936.

What went wrong with the BT-9?

The BT-9 suffered from stall/spin problems and a variety of fixes were tried. The USAAC temporarily settled on using slats on the later versions of the BT-9. However these did not work well, and the BT-14s longer fuselage and swept forward outer wing panels, unlike the straight trailing edges of the BT-9 helped somewhat.