Design of the Type 522 began in 1947 to replace the earlier Type 222 Vihor in the advanced training role. The new design featured a tricycle undercarriage and side-by-side seating for the student and instructor. As development progressed options were identified to allow the aircraft to fulfill other roles, including that of a four-seat light liaison aircraft (with a bench seat in the rear of the cockpit) and a civilian sport training aircraft.
General characteristics
Crew: 2
Length: 7.94 metres
Wingspan: 10.0 metres
Height: 2.92 metres
Wing area: 16.49 sq. metres
Empty weight: 1,134 kilograms
Max takeoff weight: 1,750 kilograms
Fuel capacity: 189 litres normal, provision for further 76 litres in auxiliary tanks
Powerplant: 1 × Racovica A1A6 air-cooled flat-six engine, 340 hp
Propellers: Three-blade constant-speed propeller, 2.29 metres diameter
Performance
Maximum speed: 378 kph at 4,880 metres
Cruise speed: 304 kph 3,050 metres)
Stall speed: 100 kph (flaps down)
Range: 975 kilometres
Service ceiling: 8,170 metres
Rate of climb: 7.7 metres/second
Takeoff distance to 15 metres: 440 metres
Landing distance from 15 metres: 375 metres