Armstrong Whitworth F.K.3

The Armstrong Whitworth F.K.3 was a British two-seat general purpose aircraft built by Armstrong Whitworth Aircraft. 

Armstrong Whitworth F.K.3
Class Aircraft
Type Utility
Manufacturer Armstrong Whitworth
Production Period 1915 - 1918
Origin United Kingdom - UK (Great Britain)
Country Name Origin Year
United Kingdom - UK (Great Britain) 1915
ManufacturerName Production From Production To Quantity
Armstrong Whitworth 1915 1918 500 View

The F.K.3 followed the basic layout of the Royal Aircraft Factory B.E.2c, which Armstrong Whitworth were building for the Royal Flying Corps. It was designed as an improvement, with a simplified structure. Trials at Upavon in May 1916 proved that the F.K.3 had a better performance in some respects than the B.E.2c, although it had a poorer useful load. Armstrong Whitworth were given a contract to build 150 aircraft with another 350 being built by Hewlett and Blondeau. 

The F.K.3 was not adopted for use by operational squadrons of the RFC in France, as the more capable F.K.8 and R.E.8 were both already in prospect. Only one overseas unit received the F.K.3 (which was 47 Squadron at Salonika), all the other aircraft were based in the United Kingdom. Most of the aircraft were used for training until replaced by the Avro 504.

General characteristics

  • Crew: 2
  • Length: 29 ft (8.84 m)
  • Wingspan: 40 ft (12.19 m)
  • Height: 11 ft 11 in (3.63 m)
  • Wing area: 442 ft (41.1 m)
  • Empty weight: 1,386 lb (629 kg)
  • Max takeoff weight: 2,056 lb (983 kg)
  • Powerplant: 1 x RAF 1A inline piston engine, 90 hp (67 kW)


  • Maximum speed: 77 knots (89 mph, 143 km/h) at sea level
  • Service ceiling 12,000 ft (3,660 m)
  • Rate of Climb: 5000 ft in 19 min


  • 1 0.303 in Lewis gun in rear cockpit


  • up to 112 lb bombs (if flown as single seater)

End notes