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The Keystone LB-14 was a short-lived designation given to a version of the LB-10A light bomber that was to be powered by Pratt & Whitney GR-1860 radial engines. Before any of the LB-14s had been built the specification was changed to include the Wright R-1750-3 engine. This change was also accompanied by a change of designation, for in 1930 the LB (Light Bomber) designation was dropped, and all existing aircraft were given numbers in the new B (Bomber) class. The first three LB-14s that had been ordered were completed as service test Y1B-5s, and were followed by 27 B-5 aircraft diverted from the original order for the LB-10A.
Specifications (LB-14).
Engine: Two Pratt & Whitney GR-1860 radial engines
Power: 575hp each
Crew: 5
Span: 74ft 9in
Length: 48ft 10in
Height: 15ft 9in
Gross Weight: 13,000lb
Guns: Five 0.30in calibre machine guns
Bomb load: 2,000lb