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Posted 6/25/2009 Printable Fact Sheet
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Keystone LB-6
Keystone LB-6. (U.S. Air Force photo)
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The Keystone LB-6 was an improved version of the XLB-6, which was in turn an improved version of the LB-5. The major design changes in the LB-6 were a lengthened fuselage and a modified tail unit. Eighteen aircraft were ordered after the U.S. Army selected it over the Curtiss XB-2 although the first aircraft (S/N 29-10) was diverted for test purposes and became the XLB-9 (and later reconverted to the LB-6 configuration).

Type Number built/
LB-6 17 Production XLB-6

Armament: Five .30-cal. machine guns and 2,000 lbs. of bombs
Engines: Two Wright R-1750-1 radials of 525 hp each
Top speed: 114 mph at sea level
Cruising speed: 95 mph
Service ceiling: 11,650 ft.
Range: 632 miles with full bomb load
Span: 75 ft. 0 in.
Length: 49 ft. 3 in.
Height: 18 ft. 1 in.
Weight: 13,440 lbs. gross 
Crew: Five
Serial numbers: 29-11 to 29-27

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