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| The
            Boeing 80 was designed in response to increased demand on
            Boeing Air Transport's San Francisco-Chicago route.  First
            flown in August 1928, it differed from its monoplane contemporaries
            (the Ford and Fokker Trimotors) in order to reduce landing speeds at
            the high-altitude airports on this route.
             The model 80 stayed in service until 1933 when it was replaced by the Boeing Model 247.  | 
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| Specifications (80A-1) | 
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