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gptkbp:instanceOf
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aircraft
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gptkbp:aircraft
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biplane
civil aviation
transport.
commercial.
conventional biplane design.
good for its time.
historical.
notable for its size and capacity.
paved the way for future airmail services.
recognized as a significant early aircraft.
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gptkbp:cockpit
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open cockpit
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gptkbp:constructionMaterial
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wood
fabric-covered wood
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gptkbp:controls
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elevator, ailerons, rudder
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gptkbp:crew
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1
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gptkbp:design
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gptkb:George_Conrad_Westervelt
high wing configuration.
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gptkbp:engine
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1
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gptkbp:enginePower
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200 hp.
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gptkbp:engineType
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gptkb:Wright_J-5
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gptkbp:famousRival
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Charles_Lindbergh.
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gptkbp:firstFlight
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1925
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gptkbp:fuelCapacity
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50 gallons
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gptkbp:headlights
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conventional tail
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gptkbp:height
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10 ft 0 in
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gptkbp:historicalSignificance
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first aircraft to carry mail for the US Postal Service.
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https://www.w3.org/2000/01/rdf-schema#label
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Boeing 40B
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gptkbp:influenced
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later_Boeing_aircraft.
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gptkbp:influencedBy
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gptkb:Boeing_40A
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gptkbp:landingGear
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tailwheel
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gptkbp:length
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30 ft 0 in
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gptkbp:manufacturer
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gptkb:Boeing
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gptkbp:maxSpeed
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120 mph
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gptkbp:maxTakeoffWeight
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3,000 lbs
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gptkbp:nationalTeam
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gptkb:United_States
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gptkbp:nickname
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gptkb:Boeing_Mailplane
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gptkbp:notableFeature
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large wingspan for stability.
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gptkbp:numberBuilt
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50
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gptkbp:operationalHistory
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used in early airmail service.
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gptkbp:passengerCapacity
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4
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gptkbp:productionCompany
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1925-1927
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gptkbp:productionLocation
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gptkb:Seattle,_Washington
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gptkbp:propulsion
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two-bladed
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gptkbp:range
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400 miles
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gptkbp:retirementYear
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1930s
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gptkbp:role
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mail transport
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gptkbp:services
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1926
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gptkbp:successor
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gptkb:Boeing_40C
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gptkbp:type
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biplane
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gptkbp:usedBy
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gptkb:United_States_Postal_Service
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gptkbp:variant
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gptkb:Boeing_40C
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gptkbp:wingspan
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43 ft 4 in
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