The Huarte Mendicoa HM-1 also known as the INTA HM.1, was a 1940s Spanish primary trainer designed by the Instituto Nacional de Técnica Aeronáutica (INTA) and built for them by Aeronáutica Industrial S.A. (AISA).
The HM.1 was designed by INTA as a two-seat primary training monoplane with a fixed tail wheel landing gear.
It was followed by a number of similar aircraft with equipment and accommodation changes.
The last of the family was the HM.7 built in 1947 which was an enlarged four-seat version powered by a 240 hp (179 kW) Argus As 10C engine, the HM.7 was the last powered aircraft designed by the Institute.
HM.1, HM.2, HM.3, HM.5, HM.7, HM.9.
Length: 7.65 m (25 ft 0 in)
Wingspan: 9.65 m (31 ft 8 in)
Height: 2.20 m (7 ft 2.25 in)
Wing area: 14 m2 (150.6 sq ft)
Empty weight: 620 kg (1,364 lb)
Gross weight: 850 kg (1,870 lb)
Power plant: 1 × Elizalde G-IV-B Tigre 4-cylinder four-cylinder linear motor , 110 kW (150 hp)
Maximum speed: 230 km/h (142.8 mph, 124.1 kn)
Cruise speed: 195 km/h (121 mph, 105 kn)
Endurance: 3 hours 30 minutes
Service ceiling: 5,000 m (16,400 ft)
Jane’s Fighting Aircraft of World War II- Leonard Bridgman.