Reportedly the same aircraft was subsequently fitted with the more powerful 105 hp Toma 4 engine, while the fuselage was lengthened to 26 ft 2.2 in (7.98 m). Redesignated Av-236 the modified aircraft had a generally better performance, including a maximum speed of 136 mph (219 kmh) and ceiling was 13,123 ft (4,000 m). The Av-236 was reportedly first flown in 1947 and retained the OK-AHZ registration, however, nofurther development took place."
The following data relate to the Av-36.
Type: Two-seat Cabin Monoplane.
Wings: Cantilever high-wing monoplane. Wooden two-spar structure with plywood covering. Wooden ailerons with fabric covering, and all-wood trailing edge flaps between ailerons and fuselage.
Fuselage: Welded steel-tube structure with fabric covering.
Tail unit: Cantilever monoplane type. Wooden structure with ply-covered fin and tail plane, and fabric covering over rudder and elevators.
Landing gear: Fixed two-wheel type. Each main wheel carried on single cantilever shock-absorber leg and faired by metal spat. Mechanically. operated brakes. Steerable tail wheel.
Power plant: A Walter Mikron 4-III four-cylinder air-cooled inverted in-line engine rated at 65 hp at 2,600 rpm at sea level, and driving Avia two-blade fixed-pitch wooden airscrew. Fuel capacity 11.9 gal (45 l); oil capacity 1.9 gal (7.3 l).
Accommodation: Enclosed cabin seating two side-by-side with dual controls. Access door on each side.