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Sikorsky S 43

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Top speed  306 km/h
Range  1,247 km
Wingspan  26 m
Weight  5,783 kg
Length  16 m
Manufacturer  Sikorsky Aircraft
Sikorsky S-43 Pan American Airways Sikorsky S43B
Engine type  Pratt & Whitney R-1690 Hornet

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The Sikorsky S-43 was a twin-engine amphibious aircraft manufactured in United States during the 1930s by the American firm Sikorsky Aircraft.

Contents

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Design and development

Sikorsky S-43 1939 Pan Am Sikorsky S43 crash Wikipedia

The S-43 first flew in 1935, and was a smaller version of the Sikorsky S-42 "Clipper". It accommodated between 18 and 25 passengers, with a separate two-crew forward cockpit. The S-43 was known as the "Baby Clipper" in airline service.

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On April 14, 1936, an S-43 with a 500 kilograms (1,100 lb) payload, piloted by Boris Sergievsky, set an altitude record for amphibious aircraft when it reached an altitude of 27,950 feet above Stamford, Connecticut. Also aboard was designer Igor Sikorsky.

In total, approximately 53 S-43s were built, including examples of the twin-tailed S-43B.

Operational history

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The S-43 was used primarily by Pan American World Airways for flights to Cuba and within Latin America. Two were also flown by Reeve Aleutian Airways in Alaska and three were used by Inter-Island Airways of Hawaii, the predecessor to modern-day Hawaiian Airlines, to ferry Pan-Am Clipper passengers and local residents from Honolulu to the other islands. One aircraft was purchased by Norwegian airline Det Norske Luftfartselskap. Panair do Brasil operated seven aircraft. Five S-43s were used between 1937 and 1945 by the French company Aéromaritime on a colonial airway between Dakar (Senegal) and Pointe-Noire (Congo). Reeve Aleutian Airways owned two S-43s during the 1950s, one operational (N53294 purchased 1948 and trade for G-21 in 1957) and one for spares (fuselage at Alaska Aviation Heritage Museum). Another S-43 was operated in Alaska with an unknown operator, wrecked at Chignik, AK, 1950s.

Sikorsky S-43 Sikorsky S43 JRS amphibian aircraft

Five aircraft were acquired by the U.S. Army Air Corps in 1937 under the designation OA-8 and were used for transport of freight and passengers. 17 aircraft were procured by the U.S. Navy between 1937 and 1939 as the JRS-1, two of which served the U.S. Marine Corps. One JRS survived in service at the end of 1941.

Sikorsky S-43 Sikorsky S43 Painted as JRS1 Walk Around Page 1

The Smithsonian National Air & Space Museum's Steven F. Udvar-Hazy Center in Virginia is currently restoring a Sikorsky JRS-1 that was on duty at Pearl Harbor on December 7th, 1941.

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Two aircraft went to private owners: Harold Vanderbilt and Howard Hughes. Hughes' S-43 N440 remains the last example of this aircraft type flying [1]. It is now owned by Kermit Weeks and has been relocated from Texas to the restoration facility at the Fantasy of Flight Museum in Polk City, Florida where it is awaiting reassembly and restoration.

Accidents and incidents

June 2, 1937
A Chilean Air Force S-43 (No. 2) capsized off Ancud, Chile, killing all nine on board.
August 2, 1937
A Pan American-Grace Airways (Panagra) S-43B (NC15065) crashed in the vicinity of Coco Solo, Canal Zone; all 14 on board died. The plane spiraled into the water at approximately 90 mph and was destroyed by an immediate explosion and fire. Most probable cause of the crash was failure of one or both of the engines due to a faulty gasoline system and/or sudden and severe rain, as the pilot indicated losing altitude two times in the three minutes prior to the crash.
August 8, 1937
A China National Aviation Corporation (CNAC) S-43W (named Chekiang) ditched at Chilang Point, Bias Bay, China, killing three of four crew; all seven passengers survived. The flying boat was forced to ditch due to bad weather. High waves broke one wing off; the eight survivors clung to the other wing until rescued.
April 25, 1938
Pan Am Flight 105, an S-43B (NC16932) stalled and crashed on landing off Kingston due to engine failure; all 18 passengers and crew survived, but the aircraft was written off.
August 13, 1939
A Pan Am S-43 (NC16933) crashed into Guanabara Bay off Rio de Janeiro due to loss of control following engine failure, killing 14 of 16 on board.
May 17, 1943
Hughes crashed his S-43 into Lake Mead, killing CAA inspector Ceco Cline and Hughes employee Richard Felt. The aircraft was later raised and restored to flying condition.
August 3, 1945
Pan Am Flight 216, an S-43 (NC15066), crashed on landing at Fort de France Hydrobase due to weather and pilot error, killing four of 14 on board.
January 3, 1947
A Panair do Brasil S-43B (PP-PBN) crashed in the Amazon River at São Paulo de Olivenca, killing 11 of 14 on board.

General characteristics

  • Crew: two (pilot, copilot)
  • Capacity: 19 passengers
  • Length: 51 ft 2 in (15.60 m)
  • Wingspan: 86 ft 0 in (26.21 m)
  • Height: 17 ft 8 in (5.38 m)
  • Wing area: 781 ft² (72.5 m²)
  • Empty: 12,750 lb (5,783 kg)
  • Loaded: lb ( kg)
  • Maximum takeoff: 19,096 lb (8,662 kg)
  • Powerplant: 2× Pratt & Whitney R-1690-52 radials, 750 hp (560 kW) each
  • Performance

  • Maximum speed: 190 mph (306 km/h)
  • Range: 775 miles (1,247 km)
  • Service ceiling: 20,700 ft (6,310 m)
  • Rate of climb: ft/min ( m/min)
  • Wing loading: lb/ft² (115.84 kg/m²)
  • Power/mass: hp/lb ( kW/kg)
  • References

    Sikorsky S-43 Wikipedia


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