Under DINFIA (Direccion Nacional de Fabricaciones e Investigaciones Aeronauticas) name, design and construction of the IA 46 light aircraft began. Adaptable as a three-seat tourer, the IA 46 Ranquel first flew on 23 December 1957.
A pre-production series of 14 was completed early in 1960, subsequent contracts calling for production of 150.
A development version, the IA 51, flew for the first time on 16 March 1963 and production was initiated. The IA 51 has metal skinning for the wing in place of the fabric of the IA 46, increased flap area, a redesigned rear fuselage, a variable-incidence tailplane, and a 180 hp Lycoming O-360-A1A.
The IA 53 is a derivative of the IA 51 with a nose wheel undercarriage and swept vertical tail.
A quick install and jettisonable 88 ImpG / 400 lt belly tank for agricultural chemicals could be attached.
Model 46 Ranquel
Engine: Lycoming O-320-A2B, 150 hp
Wingspan: 38 ft 1.5 in / 11.62 m
Length: 24 ft 5 in / 7.45 m
Empty weight Tourer: 1390 lb / 630 kg
Empty weight Agricultural: 1520 lb / 690 kg
MTOW Tourer: 2115 lb / 960 kg
MTOW Agricultural: 2555 lb / 1160 kg
Max speed: 112 mph
Max cruise 75%: 83 kt / 96 mph / 155 kph
ROC SL: 530 fpm
Service ceiling: 13,125 ft / 4000 m
Max Range 75%: 351 nm / 405 mi / 650 km
Front seating: 1
Rear seating: 2
IA 51 Super Ranquel
Engine: Lycoming O-360-A2A, 180 hp
Max speed: 119 mph
Max cruise 75%: 109 mph
ROC SL: 710 fpm
Service ceiling: 14,750 ft
All Aero 