850 hp Wright R-1820-G5 Cyclone
Four were built. Prototype was NX19431 sn 21-1. Sold to China, they promptly crashed it. Three other sold to China, NX19441, sn 21-2, NX19442, sn 21-3 and NX19443, sn 21-4. All three were lost on ferry flight from Rangoon to base in China.
Curtiss-Wright photo. Looks like the photo was taken from the CW-23, NX19427.
