This post has not been translated to English yet. Please use the TRANSLATE button above to see machine translation of this post.
Model 214 / Y1B-9 - prototyp bombardéru s motory Curtiss Conqueror
Model 215 / YB-9 - prototyp bombardéru s motory Pratt & Whitney Hornet
Model 246 / Y1B-9 - zkušební pětikusová série
Zdroj:
www.nationalmuseum.af.mil