Air Tractor AT-400

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AT-400 family
AirTractor 402.jpg
Role Agricultural aircraft
Manufacturer Air Tractor
First flight 1979
Introduction 1980
An AT-400 on the runway

The Air Tractor AT-400 is a family of agricultural aircraft that first flew in the United States on September 1979. Type certification was awarded to Air Tractor in April 1980. Of low-wing monoplane taildragger configuration, they carry a chemical hopper between the engine firewall and the cockpit.


Variants

  • AT-400 - AT-301 with 680 shp (507 kW) Pratt & Whitney Canada PT6A-15AG engine and 400 US gal (1,510 L) hopper. Short-span (45 ft 1¼ in (13.75 m)) wings.[1] 72 built.[2]
    • AT-400A - AT-400 with 550 hp (410 kW) Pratt & Whitney Canada PT6A-20 engine.[1] 14 built.[2]
  • AT-401 - AT-301 with longer-span wings and 400 US gal (1,510 L) hopper, powered by 600 hp (447 kW) Pratt & Whitney R-1340 radial engine.[3] 168 built.[2]
    • AT-401A - AT-401 with PZL-3S engine. One built.[2]
    • AT-401B -Improved revision of AT-401, with revised wingtips and further increased span (51 ft 1¼ in (15.57 m)). 69 built by December 2001.[2]
  • AT-402 - AT-401 with Pratt & Whitney Canada PT6A-15 engine.[3] 68 built.[2]
    • AT-402A - low cost version of AT-401B, with Pratt & Whitney Canada PT6A-20 engine.[2] 103 built by December 2001.[2]
    • AT-402B - improved version of AT-402, with revised wingtips and increased span of AT-401B.[2] 31 built by December 2001.[2]

Specifications (AT-401)

Data from Janes's All The World's Aircraft 1993-94 [3]

General characteristics

  • Crew: one
  • Capacity: 400 US gal (1,510 L) chemicals
  • Length: 27 ft 0 in (8.23 m)
  • Wingspan: 49 ft 1¼ in (14.97 m)
  • Height: 8 ft 6 in (2.59 m)
  • Wing area: 294.0 ft2 (27.31 m2)
  • Aspect ratio: 8.20:1
  • Empty weight: 4,135 lb (1,875 kg)
  • Gross weight: 7,860 lb (3,565 kg)
  • Powerplant: 1 × Pratt & Whitney R-1340 radial engine, 600 hp (447 kW)

Performance

  • Maximum speed: 156 mph (251[4] km/h)
  • Cruise speed: 143 mph (230[5] km/h)
  • Stall speed: 61 mph (99[6] km/h)
  • Range: 630 miles (1,014 km)
  • Rate of climb: 1,100 ft/min (5.6 m/s)

See also

Related development

References

Notes
  1. ↑ 1.0 1.1 Taylor 1988, p.323.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Jackson 2003, p.507.
  3. ↑ 3.0 3.1 3.2 Lambert 1993, pp. 412–413.
  4. ↑ at sea level
  5. ↑ at 4,000 ft (1,220 m)
  6. ↑ flaps down
Bibliography
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