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Encyclopedia > Boeing 40A
Boeing Model 40A
Type Mailplane
Manufacturer Boeing
Maiden flight 1927-05-20
Introduced 1927-07-01
Number built 25

The Boeing 40A was the first passenger aircraft built by the Boeing company. It was of a biplane configuration, and powered by an air-cooled Pratt & Whitney Wasp engine, which offered a 200lb weight saving over an equivalent liquid cooled engine. The frame of the fuselage was constructed using welded steel tubing. The primary purpose of the aircraft was to carry mail, however 2 passengers could be accomodated in a small cabin. A mailplane is an aircraft used for carrying mail. ... An aerospace manufacturer is a company or individual involved in the various aspects of designing, building, testing, selling, and maintaining aircraft, aircraft parts, missiles, rockets, and/or spacecraft. ... The Maiden flight of an aircraft is the first occasion on which an aircraft leaves the ground of its own accord. ... 1927 (MCMXXVII) was a common year starting on Saturday (link will take you to calendar). ... May 20 is the 140th day of the year in the Gregorian Calendar (141st in leap years). ... 1927 (MCMXXVII) was a common year starting on Saturday (link will take you to calendar). ... July 1 is the 182nd day of the year (183rd in leap years) in the Gregorian Calendar, with 183 days remaining. ... The Boeing Company (NYSE: BA, TYO: 7661 ) is the world’s largest aircraft manufacturer. ... This article is about the U.S. company Pratt & Whitney. ...

General characteristics

  • Crew: 1
  • Capacity: 2
  • Length: 33ft 2in ()
  • Wingspan: 44ft 2in ()
  • Height: ()
  • Wing area: ()
  • Empty weight: ()
  • Max takeoff weight: 6000lb ()
  • Powerplant: 1× Pratt & Whitney Wasp , 420hp ()


The distance AB is the wing span of this Aer Lingus Airbus A320. ... In aviation, the Maximum Take-Off Weight (or MTOW) is the maximum weight with which an aircraft can achieve flight. ... VNO of an aircraft is the V speed which refers to the velocity of normal operation. ... VC may stand for: vehicular cycling Venture capital Vice-county Victoria Cross Viet Cong Vinyl chloride Virginia Central Railway (AAR reporting mark VC) virtual circuit Visual C++ Volkov Commander (file manager) Saint Vincent and the Grenadines: ISO country code This is a disambiguation page — a navigational aid which lists pages... The maximal total range is the distance an airplane can fly between takeoff and landing as limited by its fuel capacity. ... In aeronautics, the service ceiling is the maximum density altitude where the best rate of climb airspeed will produce a 100 feet per minute climb(twin engine) and 50 feet(single engine) at maximum weight while in a clean configuration with maximum continuous power. ...


Boeing History - Boeing Model 40A Commercial Transport Retrieved June 17, 2006.

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Boeing Airliners
Piston Engined Airliners: 40A | 80 | 221 | 247 | 307 | 314 | 377
Jet Engined Airliners: 367-80 | 707 | 720 | 727 | 737 | 747 | 757 | 767 | 777 | 717 | 787
Proposed Airliners: 2707 | 7J7 | NLA | Sonic Cruiser | Y1 | Y3



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