|HS-42 and HA-43|
|Primary user||Spanish Air Force|
The Hispano HS-42 and its derivative, the HA-43, were advanced military trainer aircraft produced in Spain in the 1940s. The basic design was that of a conventional, low-wing, cantilever monoplane with seating for the pilot and instructor in tandem. The HS-42 had fixed, tailwheel undercarriage with spatted mainwheels, while the HA-43 had retractable main units. Produced on the assembly line that had been used to build Fokker D.XXI fighters, the HS-42 shared some components with this aircraft.
- Original production version with fixed undercarriage and Piaggio Stella P.VII C.16 engine
- Improved variant with retractable undercarriage and Armstrong Siddeley Cheetah 27 engine
Data from Jane's All The World's Aircraft 1953-54 
- Crew: Two, pilot and instructor
- Length: 7.95 m (26 ft 2 in)
- Wingspan: 10.00 m (32 ft 10 in)
- Height: 2.6 m (8 ft 6 in)
- Empty weight: 1,504 kg (2,309 lb)
- Gross weight: 2,050 kg (4,510 lb)
- Powerplant: 1 × Armstrong Siddeley Cheetah 27, 290 kW (390 hp)
- Maximum speed: 335 km/h (209 mph)
- Range: 1,200 km (750 miles)
- Service ceiling: 6,000 m (19,680 ft)
- Rate of climb: 8.0 m/s (1,410 ft/min)
- 2 × fixed, forward-firing 7.7 mm Breda-SAFAT machine guns under wings
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- Bridgman 1953, pp.186-187.
- Bridgman, Leonard (ed.) (1953). Jane's All The World's Aircraft 1953-54. London: Jan's.
- The Illustrated Encyclopedia of Aircraft. London: Aerospace Publishing. p. 2174.
- Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. pp. 510–11.