FMA I.Ae.20 El Boyero

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FMA 20 El Boyero
Role Utility aircraft
Manufacturer FMA, Petrolini Hermanos
Designer Juan Peretti
First flight 2 November 1940
Number built 131

The FMA 20 El Boyero ("Shepherd") was a light utility aircraft produced in Argentina in the 1940s. It was a conventional high-wing strut-braced monoplane with fixed tailskid undercarriage with seating for two side-by-side in an enclosed cabin. Design work started in 1939 and two prototypes were built, the first flying in November 1940 and the second early the following year. Plans to put the aircraft into production were put on hold because of FMA's commitment to military production, and the design was sold to Sfreddo y Paolini, who in turn sold it to Petrolini Hermanos. Following the war, this firm received an order for 150 of the type from the Argentine government, and commenced deliveries in January 1949. The aircraft were distributed to Argentina's aeroclubs and to the military, which used it as a spotter aircraft. Petrolini experienced great difficulties sourcing sufficient materials to complete the order, and in 1951 ceased production, having completed 129 aircraft.




General characteristics

  • Crew: One pilot
  • Capacity: 1 passenger
  • Length: 7.10 m (23 ft 4 in)
  • Wingspan: 11.50 m (37 ft 9 in)
  • Height: 1.8 m (5 ft 11 in)
  • Wing area: 17.7 m2 (191 ft2)
  • Empty weight: 325 kg (716 lb)
  • Gross weight: 550 kg (1,210 lb)
  • Powerplant: 1 × Continental A65-8, 49 kW (65 hp)


  • Maximum speed: 160 km/h (100 mph)
  • Cruising speed: 140 km/h (87 mph)
  • Range: 650 km (400 miles)
  • Service ceiling: 4,000 m (13,100 ft)


See also[edit]


  • Bridgeman, Leonard. Jane's All The World's Aircraft 1950-1951 edition New York: The Mcgraw.Hill Book Company, Inc, 1950 (No ISBN)
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 393. 
  • Simpson, R. W. (1995). Airlife's General Aviation. Shrewsbury: Airlife Publishing. 

External links[edit]

Media related to FMA 20 El Boyero at Wikimedia Commons