Boeing 247

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 monocoque fuselage, autopilot, and retractable landing gear.

History

Seventy-five 247s were built. Boeing Air Transport flew 60. United Aircraft Corp. flew 10, and the rest went to Deutsche Lufthansa and a private owner in 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 rows with a seat 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.

Boeing 247 lamp at Future of Flight Museum shop

The 247s remained in airline service until World War II, when several were converted into C-73 transports and trainers. Some were still flying in the late 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 Ottawa, Ontario, and the Science Museum in Kensington, London.

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)

Specifications

This aircraft article has not been updated to WikiProject Aircraft's current standards. Please see this page for more details.

• 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)
    • • 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
  • No. of Engines: 2
  • Powerplant: Pratt & Whitney S1H1-G Wasp
  • Power (each): 550 hp (410 kW)
• 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)