Three-place open-cockpit biplane powered with Wright 200-hp. engine; wood and metal wings; steel-tube fuselage; all-steel tail surfaces; upper wing span 34 ft.; 130 m.p.h. maximum speed; 42 m.p.h. landing speed. (See also Airway Age vol. 10, no. 4, Apr. 1929 pp. 508 and 510, 1 fig)
Butler black hawk biplane
West. Flying
Western Flying ; 6 , n 2
1929
1 Fig.
Article (Journal)
English
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