page_title: Airspeed Ambassador
section_title: Specifications
hierarchical_section_title: Airspeed Ambassador / Specifications
caption_attribution_description: English: Silhouette of Airspeed Ambassador. The 1952 edition of the Observer's Book of Aircraft used 34 Crown Copyright silhouettes provided by the Controller of H.M. Stationery. An acknowledgements section on page 5 of the book identifies them by page. This image is one of those and since the publication date is pre-1957 is in the public domain.
context_page_description: The Airspeed AS.57 Ambassador is a British twin piston-engined airliner that first flew on 10 July 1947 and served in small numbers through the 1950s and 1960s. The planes are sometimes referred to as "Elizabethans", as they were originally ordered and popularised by British European Airways as the planes used for their "Elizabethan Class" passenger service.
context_section_description: Data from Airspeed aircraft since 1931, British Civil Aircraft since 1919 Volume 1
  General characteristics
  Crew: 3
  Capacity: Up to 60 passengers
  Length: 81 ft (25 m)
  Wingspan: 115 ft (35 m)
  Height: 18 ft 4 in (5.59 m)
  Wing area: 1,200 sq ft (110 m²)
  Aspect ratio: 11:1
  Empty weight: 35,884 lb (16,277 kg)
  Max takeoff weight: 52,000 lb (23,587 kg)
  Fuel capacity: 1,000 imp gal (1,200 US gal; 4,500 l) in two integral wing tanks, with provision for 600 imp gal (720 US gal; 2,700 l) in two centre-section bag tanks
  Powerplant: 2 × Bristol Centaurus 661 18-cylinder air-cooled sleeve-valve piston enigines, 2,625 hp (1,957 kW)  each
  Performance
  Maximum speed: 312 mph (502 km/h, 271 kn) at 75% power with 11,650 lb (5,280 kg) payload
  Cruise speed: 300 mph (480 km/h, 260 kn) at 20,000 ft (6,100 m) at 50,000 lb (23,000 kg)
  279 mph (242 kn; 449 km/h) at 60% power
  Range: 720 mi (1,160 km, 630 nmi) with 11,650 lb (5,280 kg) payload and no reserves at 280 mph (240 kn; 450 km/h)
  900 mi (780 nmi; 1,400 km) at 220 mph (190 kn; 350 km/h)
  1,560 mi (1,360 nmi; 2,510 km) with 7,900 lb (3,600 kg) payload max. fuel at 280 mph (240 kn; 450 km/h)
  1,950 mi (1,690 nmi; 3,140 km) with 7,900 lb (3,600 kg) payload max. fuel at 220 mph (190 kn; 350 km/h)
  Rate of climb: 1,520 ft/min (7.7 m/s) at 5,000 ft (1,500 m) at maximum weight
  Rate of climb on one engine: 420 ft/min (130 m/min) after take-off at maximum weight
  360 ft/min (110 m/min) at 5,000 ft (1,500 m) at maximum weight
  Wing loading: 43.3 lb/sq ft (211 kg/m²) at 52,000 lb (24,000 kg)
  Power/mass: 0.1 hp/lb (0.16 kW/kg) at 52,000 lb (24,000 kg)
  Take-off distance to 50 ft (15 m): 3,270 ft (1,000 m) at maximum T.O weight
  Take-off distance to 50 ft (15 m) one engine: 4,950 ft (1,510 m) at maximum T.O weight
  Landing distance from 50 ft (15 m): 2,565 ft (782 m) at max landing weight
caption: Airspeed Ambassador
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