06 Boeing Monomail With its single cantilever wing and smooth all-metal construction, the Monomail made traditional biplane design a thing of the past. The airplane configuration was a trendsetter with retractable landing gear, a streamlined fuselage and a cowl-covered engine, the first time many of these advances had been brought together. The aircraft first flew on May 6, 1930, and began delivering mail and passengers a year later. The structural and aerodynamic features of the Monomail were duplicated on Boeing’s first bomber, the B-9, and the world’s first modern airliner, the Boeing Model 247. •
Frontiers July 2016 Issue
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