Permalink: http://www.boeingimages.com/archive/Model-221-Monomail-2F3XC5NBIAM.htmlCopyright © Boeing. All Rights Reserved.View Photo/Video onlyConceptually similarModel 221 Monomail Landing GearVintage United Air Lines Model 221 MonomailMonomail on TarmacModel 200 Monomail in FlightBoeing Monomail on ApronModel 200 Monomail in FlightModel 200 Monomail on TarmacModel 221A MonomailModel 200 Monomail Loading CargoView AllView more with similar tones Model 221 MonomailSelect usageWhat Type of Order?Usage:The Monomail of 1930 was developed by Boeing as one of the first truly "modern" transport airplanes, the Monomail led the way to general acceptance of the all-metal low-wing monoplane with retractable landing gear as the standard airline type. Known as the Boeing Model 200, the first Monomail was an all-cargo airplane, with open pilot's cockpit to the rear. Boeing Monomail 221 was generally similar but carried eight passengers in a forward compartment. Both models were powered by 575 hp Pratt & Whitney Hornet engines. The Model 200 and the 221 were later modified into Model 221-As and were combination passenger-cargo airplanes. The Monomail led to the Boeing B-9 bombers and later the highly successful Boeing 247 Transport. BI24002 (4048b)Maximum size:5998px × 4821px (~82 MB)19.9in × 16.0in (300dpi)License type:Rights ManagedKeywords:1930s-airplanes-Boeing livery-commercial-commercial passenger planes-copy space-day-exteriors-full body views-gray skies-ground shots-historic production status-left side views-mail planes-Monomail-Monomail Model 221-monoplanes-photos-propeller planes-tarmac-text-vintage / retroRelated Photo/Videos:View All