Letov S-20

The Letov Š-20 was a fighter aircraft produced in Czechoslovakia during the 1920s.

Letov S-20
Class Aircraft
Type Fighter
Manufacturer Letov Kbely
Origin Czechoslovakia
Country Name Origin Year
Czechoslovakia 1925
Country Name Operational Year Retirement Year
Czechoslovakia View
ManufacturerName Production From Production To Quantity
Letov Kbely 118 View

The Letov Š-20 was a conventional, single-bay biplane with unstaggered wings braced by N-struts. In overall appearance, it greatly resembled contemporary SPAD fighters. The fuselage and empennage were of welded steel tube construction and covered in fabric. The wings had a tubular metal spar but were otherwise wooden, and also fabric-skinned.

The Czechoslovakian Air Force bought 105 machines, and 10 examples were produced for Lithuania under the designation Š-20L. These remained in service until 1936 and 1935 respectively.

An Š-20 placed second in the single-engine category of the national President of the Republic air race in 1925, but fared better the following year. In the 1926 race, an Š-20 not only won this category ,but also set a new national airspeed record of 234 km/h (146 mph). This record was short-lived, however, since the prize for the fastest circuit was also won in an Š-20, and this raised the record to 245 km/h (153 mph).

A single prototype of an unarmed advanced trainer version was built as the Š-21, but this did not sell.

Role Fighter
National origin Czechoslovakia
Manufacturer Letov
First flight 1925
Number built ca 118

General characteristics

  • Crew: One
  • Length: 7.44 m (24 ft 5 in)
  • Wingspan: 9.70 m (31 ft 10 in)
  • Height: 7 m (23 ft 3.25 in)
  • Wing area: 18.4 m2 (198 ft2)
  • Empty weight: 728 kg (1,602 lb)
  • Gross weight: 1,048 kg (2,306 lb)
  • Powerplant: 1 × Škoda-built Hispano-Suiza 8Fb, 190 kW (260 hp)


  • Maximum speed: 256 km/h (160 mph)
  • Range: 528 km (330 miles)
  • Service ceiling: 7,200 m (23,600 ft)
  • Rate of climb: 6.0 m/s (1,190 ft/min)


  • 2 × fixed, forward-firing .303 Lewis guns

End notes