Keystone Y1B-4

Description

Manufacturer:	Keystone
Base model:	B-4
Designation:	Y1B-4
Designation System:	U.S. Air Force
Designation Period:	1924-Present
Basic role:	Bomber
Status:	Prototype

Specifications

Not Yet Available

Known serial numbers

30-344 / 30-348

Recent comments by our visitors

Rob Atkinson  , CO	Don't know if I can upload , (legally??) but there's a photo of a Y1B-4 qn wikipedia 09/24/2008 @ 13:19 [ref: 22732]
Rob Atkinson  , CO	Don't know if I can upload , (legally??) but there's a photo of a Y1B-4 qn wikipedia 09/24/2008 @ 13:19 [ref: 22731]
Rob Atkinson  , CO	Don't know if I can upload , (legally??) but there's a photo of a Y1B-4 qn wikipedia 09/24/2008 @ 13:18 [ref: 22730]