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Boeing 247

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Boeing 247


The Boeing 247 was one of the first modern passenger airliners. Its first flight was on February 8, 1933 and entered service that same year. The aircraft incorporated many revolutionary features such as an all-metal fuselage, autopilot, and retractable landing gear.

76 aircraft were built: seventy of these were for United Airlines, four for Lufthansa, and two for the Republic of China. Many of United's aircraft were later purchased by Western Airlines. The new 247s were capable of crossing the United States from east to west eight hours faster than their predecessors, such as the Ford Trimotor and Curtiss Condor.

The 247 carried ten passengers, five on each side of the aisle, as well as a flight attendant. The wing's main spar went right through the cabin, so some passengers had to step over a large hump in the middle of the aisle to reach their seats.

On October 10, 1933, a United Airlines Boeing 247 was the victim of the first proven case of sabotage of a commercial airliner. The aircraft, en route from Cleveland to Chicago, was destroyed by a nitroglycerin-based explosive device over Chesterton, Indiana.

During World War II, United's 247s were converted into C-73 transport aircraft: these remained in the United States Air Force's inventory until the early 1960s.

There are currently four 247s left in the world: one of them, based at Paine Field in Snohomish County, Washington, has been restored to flyable condition. The National Air and Space Museum in Washington, DC also has a 247 on display, as does Canada's National Museum of Science and Technology in Rockcliffe, and the Science Museum in Wroughton, England.

Contents

Specifications

  • Boeing 247
    • Wingspan: 74 ft (22 m)
    • Length: 51 ft 7 in (15.5 m)
    • Loaded weight: 13,650 lb (6,205 kg)
    • Top speed: 200 mph (320 km/h)
    • Cruising speed: 189 mph (305 km/h)
    • Range: 745 mi (1,200 km)
    • Ceiling: 25,400 ft (7,620 m)
  • Boeing 247D
    • Length: 51 ft 5 in (15.7 m)
    • Height: 12 ft 5 in (3.8 m )
    • Wingspan: 74 ft 1 in (22.6 m)
    • Wingarea: 836.4 ft² (78 m²)
    • Empty Weight: 8,921 lb (4,055 kg)
    • Gross Weight: 16,770 lb (7,621 kg)
    • Max Weight: 16,805 lb (7,623 kg)
  • Propulsion
  • Performance
    • Cruise Speed: 188 mph (304 km/h)
    • Max Speed: 199 mph (322 km/h)
    • Climb: 1,148 ft/min (350 m/min)
    • Ceiling: 25,387 ft (7,740 m)

Existing aircraft

Some existing 247s at museums:

Serial c/n Info
CF-JRQ 1699 National Museum of Science and Technology, Rockcliffe, Canada. Donated to the Museum in 1967 by California Standard Oil of Calgary, Alberta
N18E 1722 Science Museum store, Wroughton, UK
N13347 1729 Museum of Flight, Paine Field, Washington, USA. Airworthy
NC13369 1953 National Air and Space Museum, Washington DC, USA. (Marked as NR257Y)

External links

  • Oldprops.com Images of 247 (http://www.oldprops.f9.co.uk/Boeing%20247.htm)
  • 247 Image (http://www.centennialofflight.gov/essay/Commercial_Aviation/UnitedAirlines/Tran16G1.htm)
  • 257 Image (http://1000aircraftphotos.com/Transports/Boeing247A.htm)

See also

Related content
Similar Aircraft Douglas DC-2 - C-73
Designation Series B-80 - B-221 - B-247 - B-307 - B-314
Related Lists List of airliners


Lists of Aircraft | Aircraft manufacturers | Aircraft engines | Aircraft engine manufacturers

Airports | Airlines | Air forces | Aircraft weapons | Missiles | Timeline of aviation

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