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Zmaj Fizir FP-1 / FP-2
In 1933, the command of the Yugoslav Royal Air Force (YRAF) decided to replace outdated planes with modern school aircraft, for transitional training from basic training to combat.
The designers, R. Fizir and D. Stankov, opted for a biplane concept, although the YRAF preferred a low wing (due to the development of modern combat aircraft). The Zmaj Factory designed a prototype Fizir FP-1, in 1993, but it did not satisfy all the requirements set by the YRAF. As a result, Rudolf Fizir and Dusan Stankov, made adjustments to the Fizir FP-1 and so the plane became the Fizir FP-2. In the end, the concept accepted.
A prototype Fizir FP-2 (Fizir Prelazni) with a Gnome-Rhone K-7 engine of 308 kW power was completed and test flown at the end of 1933. More test flights followed, and by 1934 the plane showed good results.
The Zmaj modified the FP-2 during 1934 using a Walter Pollux 2 engine of 235 kW power, but the results were not satisfactory.
Engine: 1 × Gnome-Rhone K7, 313 kW (420 hp)
Propeller: 2-blade
Wingspan: 10.80 m (35 ft 5 in)
Wing area: 28.80 sq.m (310.0 sq ft)
Length: 7.90 m (25 ft 11 in)
Height: 2.90 m (9 ft 6 in)
Empty weight: 740 kg (1,631 lb)
Gross weight: 1,450 kg (3,197 lb)
Maximum speed: 200 km/h (120 mph; 110 kn) 238 km/h at sea level
Range: 580 km (360 mi; 313 nmi)
Service ceiling: 6,800 m (22,310 ft) 
Crew: 2 

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