Letov Š.4 / SHS. 1 ![]()
A series of S-4 fighters was ordered, but 20 of these were completed with the 180 hp HS 8Aa engine as Š 4a aerobatic trainers. As a result of low manufacturing standards a number of difficulties were experienced with the S4 which was grounded in 1927, the surviving aircraft being rebuilt in 1928 to Š 4a trainer standard.
Letov Š-4 / SHS-4
Engine: 1 x 220hp Hispano-Suiza 8Ba
Max take-off weight: 980 kg / 2161 lb
Empty weight: 673 kg / 1484 lb
Wingspan: 8.00 m / 26 ft 3 in
Length: 6.58 m / 21 ft 7 in
Height: 2.62 m / 8 ft 7 1/8 in
Wing area: 16.43 sq.m / 176.85 sq ft
Max. speed: 232 km/h / 144 mph
Cruise speed: 200 km/h / 124 mph
Rate of climb: 323 m/min / 1050 ft/min
Climb to 5000m: 21 min 50 sec
Service ceiling: 5500 m
Range: 500 km / 311 miles
Armament: 2 x 7.7mm
Crew: 1
Š -4a
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