González Gil-Pazó GP-1

González Gil-Pazó GP-1
González Gil-Pazó GP-1 trainer of the Spanish Republican Air Force.
Role	Two-seat trainer
National origin	Spain
Designer	Arturo González Gil y Santibañez and José Pazó
First flight	June 1934
Number built	c.40

The González Gil-Pazó GP-1 was a single-engine, two-seat open cockpit training aircraft, built in Spain in the 1930s to compete for a government contract. Declared the winner, production was curtailed by the Spanish Civil War. Two cabin variants, the González Gil-Pazó GP-2 and GP-4, were also built.

The first aircraft produced from the collaboration between Arturo González Gil y Santibañez and José Pazó was the Gil-Pazó No.1. It was, like all of their aircraft, a low-wing cantilever monoplane. It was built of wood and metal with plywood skinning, seated two and had an unfaired conventional undercarriage. Reportedly similar to the Miles Hawk, it was powered by an ADC Cirrus engine. Almost no specifications are known, apart from a loaded weight of 778 kg (1715 lb). It first flew in June 1932 and was last recorded at Cuatro Vientos, Madrid in July 1936.

In 1934 the Director General de Aeronáutica issued a specification for a two-seat trainer and Gil-Pazó's response was the GP-1. This "supremely elegant" aircraft, with two open cockpits and a trousered undercarriage was reportedly somewhat like the Miles Hawk Major in appearance. Its wings, of semi-elliptic plan, had a wooden structure and a stressed plywood skin. Flaps were fitted. The fuselage was a steel tube structure, fabric covered at the rear with dural skinning forward. For its first flight in June 1934 it was powered by the same Cirrus engine as the No.1 but this was replaced by a 145 kW (195 hp) Walter Junior inverted inline engine for the trainer contract competition.

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