In 1957, the Argentine aircraft designer Alfredo Turbay began work on a twin-engined STOL light transport, the Turbay T-3A, with Turbay S.A. formed at Buenos Aires in January 1961 to build the new design. The T-3A was a low-wing cantilever monoplane of all metal construction. It was powered by two 130 kW (180 hp) Lycoming O-360-A1D engines driving two-bladed propellers, and was fitted with a retractable nosewheel undercarriage.
Alfredo Turbay piloted the T-3A on its first flight on 8 December 1964. Production was planned of the T-3B, which was to be fitted with 190–260 kW (250–350 hp) Lycoming or Continental engines, giving improved performance. These plans did not come to fruition, with the prototype T-3B never completed, and no production occurring.
Powerplants: 2 × Lycoming O-360-A1D, 130 kW (180 hp) each
Propellers: 2-blade Hartzell HC-92 zk-2b/8447-12A metal
Wingspan: 13.52 m (44 ft 4 in)
Wing area: 24.08 m2 (259.2 sq ft)
Aspect ratio: 7.5:1
Airfoil: NACA 23024 at root, NACA 4412 at tip
Length: 9.40 m (30 ft 10 in)
Height: 3.60 m (11 ft 10 in)
Empty weight: 1,034 kg (2,280 lb) equipped
Max. zero-fuel weight: 1,725 kg (3,803 lb)
Max takeoff weight: 1,860 kg (4,101 lb) (MTOW and MLW)
Fuel capacity: 360 L (95 US gal; 79 imp gal) in four wing tanks, with provision for 2x 80 L (21 US gal; 18 imp gal) external tanks; 24 L (6 US gal; 5 imp gal) oil
Wing loading: 77 kg/m2 (16 lb/sq ft)
Power/mass: 0.1442 kW/kg (0.0877 hp/lb)
Maximum speed: 318 km/h (198 mph, 172 kn)
Econ. Cruise: 230 km/h (140 mph, 120 kn)
Max cruise: 255 km/h (158 mph; 138 kn)
Stall speed: 85.4 km/h (53.1 mph, 46.1 kn)
Never exceed speed: 342 km/h (213 mph, 185 kn)
Range: 1,380 km (860 mi, 750 nmi) with maximum payload, zero wind
Range: 1,840 km (1,143 mi; 994 nmi) with maximum fuel, zero wind
Service ceiling: 7,600 m (24,900 ft)
SE Service ceiling: 3,500 m (11,483 ft)
Rate of climb: 6.6 m/s (1,300 ft/min)
Take-off run: 118 m (387 ft)
Take-off distance to 15.25 m (50 ft): 225 m (738 ft)
Landing run: 100 m (328 ft)
Landing distance from 15 m (49 ft): 180 m (591 ft)
Crew: 1
Capacity: 6 passengers / 522 kg (1,151 lb) max. payload / tanks for 800 L (211 US gal; 176 imp gal) chemicals
All Aero 