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The Ahrens AR 404 is an American four-engined transport aircraft developed in 1975-1976 by the Ahrens Aircraft Corporation. Only four were built.

History[]

The AR 404 was designed as a simple, rugged transport that could carry 30 passengers or four LD3 containers. The aircraft has a square-shaped fuselage of constant diametre to maximize the volume for freight, and a loading ramp.

Military transport and gunship versions, as well as a two-engined variant, were also suggested, but never built.

The first prototype, N1028G, first flew on 1 December 1976. Mass production was to take place in Puerto Rico, and three examples were built there, but a government investigation into the Ahrens Aircraft Corporation ended the funding, and the project was abandoned in the early 1980s. Only one (N404AR) of the Puerto Rican AR 404s ever flew.

Specifications[]

  • Crew: 2
  • Capacity: 30 passengers
  • Length: 52 ft 9 in (16.08 m)
  • Wingspan: 66 ft 0 in (20.12 m)
  • Height: 18 ft 6 in (5.64 m)
  • Wing area: 422 sq ft (39.2 m2)
  • Aspect ratio: 10.1:1
  • Airfoil: NACA 643-618
  • Empty weight: 9,500 lb (4,309 kg)
  • Max takeoff weight: 17,500 lb (7,938 kg)
  • Powerplant: 4 × Allison 250-B17B turboprops, 420 shp (310 kW) each
  • Maximum speed: 220 mph (350 km/h, 190 kn)
  • Cruise speed: 200 mph (310 km/h, 170 kn)
  • Stall speed: 86 mph (139 km/h, 75 kn) (flaps down)
  • Range: 980 mi (1,570 km, 850 nmi)
  • Service ceiling: 18,000 ft (5,500 m)
  • Rate of climb: 1,200 ft/min (6.1 m/s)
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