Keystone XB-1 Huff-Daland's XB-1 bomber design of 1926 was cancelled and reordered as the Keystone XB-1B, a five-seat biplane with two 600-hp Curtiss V-1570-5 Conqueror engines. It never progressed beyond prototype stage.
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Keystone XB-1 Huff-Daland's XB-1 bomber design of 1926 was cancelled and reordered as the Keystone XB-1B, a five-seat biplane with two 600-hp Curtiss V-1570-5 Conqueror engines. It never progressed beyond prototype stage.
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