| gptkbp:instanceOf | gptkb:aircraft 
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                                | gptkbp:alsoKnownAs | gptkb:Boston gptkb:DB-7
 
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                                | gptkbp:armament | bombs machine guns
 cannons
 
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                                | gptkbp:category | gptkb:aircraft gptkb:World_War_II_bombing
 twin-engined aircraft
 
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                                | gptkbp:countryOfOrigin | gptkb:United_States 
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                                | gptkbp:crew | 3 
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                                | gptkbp:engineType | gptkb:Wright_R-2600_Twin_Cyclone 
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                                | gptkbp:firstFlight | 1939 
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                                | gptkbp:height | 17 ft 7 in 
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                                | gptkbp:introduced | 1941 
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                                | gptkbp:length | 48 ft 
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                                | gptkbp:manufacturer | gptkb:Douglas_Aircraft_Company 
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                                | gptkbp:maximumSpeed | 317 mph 
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                                | gptkbp:notableOperation | gptkb:South_African_Air_Force gptkb:Free_French_Air_Force
 gptkb:Royal_Australian_Air_Force
 
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                                | gptkbp:numberBuilt | 7,478 
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                                | gptkbp:powerplant | 2 × Wright R-2600-23 radial engines 
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                                | gptkbp:primaryUser | gptkb:Royal_Air_Force gptkb:United_States_Army_Air_Forces
 gptkb:Soviet_Air_Force
 
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                                | gptkbp:range | 1,025 mi 
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                                | gptkbp:retired | 1949 
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                                | gptkbp:role | gptkb:aircraft gptkb:bomber
 
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                                | gptkbp:serviceCeiling | 23,700 ft 
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                                | gptkbp:usedInConflict | gptkb:World_War_II 
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                                | gptkbp:wingspan | 61 ft 4 in 
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                                | gptkbp:bfsParent | gptkb:Women_Airforce_Service_Pilots gptkb:Pearl_Harbor_Aviation_Museum
 gptkb:Pete_Knight
 gptkb:Eglin_Air_Force_Base
 gptkb:U.S._Army_Air_Forces
 
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                                | gptkbp:bfsLayer | 6 
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                                | https://www.w3.org/2000/01/rdf-schema#label | A-20 Havoc 
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