Basic Trainer BT-9 – 14

BT-9A

BT 9A

BT-9

BT9

BT-9

Basic Trainer with 400hp Wright R-975-7 Whirlwind and new canopy. Dangerous stall resulted in a variety of unsuccessful fixes. 42 built.

BT-9A

Armed BT-9 with one cowl gun and one rear flexible gun, and modified canopy. 40 built.

BT-9B

Minor changes from BT-9, unarmed. 117 built. 1 modified as sole BT-9D which was modified as a prototype for BT-14 with new outer wing panels and other alterations.

BT-9C

Wright R-975-7, similar to the BT-9A with minor changes. 66 built

BT-9D

One prototype only, Intermediate step in development of the BT-14.

Y1BT-10

600hp Pratt & Whitney R-1340-41. First aircraft of batch of BT-9C completed as Y1BT-10.

BT-10

Production version of Y1BT-10 – cancelled

BT-14

lengthened all metal fuselage and new canopy, Pratt & Whitney R-985-25, 251 built.

BT-14A

27 BT-14s were re-engined with 400 hp (298 kW) Pratt & Whitney R-985-11.

BT-14

BT-14 - lengthened all metal fuselage and new canopy, Pratt & Whitney R-985-25, 251 built.

BT-14

BT14 in flight

BT14 in flight