Avro Antelope

The Avro 604 Antelope was a British light bomber which was designed and built in the late 1920's to meet a requirement for a light bomber to equip the Royal Air Force, competing against the Hawker Hart and the Fairey Fox II. It was unsuccessful, the Hart being preferred. 

Avro Antelope
Class Aircraft
Type Bomber
Manufacturer Avro
Production Period 1928 - 1933
Origin United Kingdom - UK (Great Britain)
Country Name Origin Year
United Kingdom - UK (Great Britain) 1928
ManufacturerName Production From Production To Quantity
Avro 1928 1933 1 View

The Avro 604 Antelope was designed to meet Air Ministry requirements for a single engined light, high speed, day bomber. One prototype was ordered by the Air Ministry, which first flew in July 1928, powered by a 480 hp Rolls-Royce F.XIB (later known as the Kestrel) engine. 

The prototype Antelope, which was a single bay biplane with all metal construction, was evaluated at the Aeroplane and Armament Experimental Establishment at Martlesham Heath against the Hawker Hart and Fairey Fox II. While it easily met the performance requirements of the specification, it showed poor low speed handling and spinning characteristics, and was rejected. 

After rejection for operational service, the prototype Antelope was fitted with dual controls and used by the Royal Aircraft Establishment as an engine and propeller test bed, remaining in use until September 1933.

General characteristics

  • Crew: Two
  • Length: 31 ft 2 in (9.50 m)
  • Wingspan: 36 ft 0 in (10.98 m)
  • Height: 10 ft 9 in (3.28 m)
  • Wing area: 377 ft (35.0 m)
  • Empty weight: 2,859 lb (1,300 kg)
  • Loaded weight: 4,538 lb (2,063 kg)
  • Powerplant: 1 x Rolls-Royce F.XI.B V-12 water cooled piston, 480 hp (358 kW)


  • Maximum speed: 150 knots (173 mph, 279 km/h)
  • Cruise speed: 126 knots (145 mph, 233 km/h)
  • Range: 504 nm (580 mi, 934 km)
  • Service ceiling 22,000 ft (6,700 m)
  • Rate of climb: 1,470 ft/min (7.5 m/s)
  • Wing loading: 12.0 lb/ft (58.9 kg/m)
  • Power/mass: 0.106 hp/lb (0.174 kW/kg)


  • One synchronised forward firing .303 in Vickers gun
  • One Lewis gun in rear cockpit
  • Up to two 250 lb bombs

End notes