- Aircraft History, Specification and Information -
Air Tractor AT-400 / AT-401 / AT-402
Air Tractor AT-402A Agricultural Aircraft - N50060
1998 Air Tractor AT-402A Agricultural Aircraft
N50060 (sn 402A-1055)
Photo taken March 19, 2010
Moses Lake Airport, WA - USA (W20)
Photo © Marcel Siegenthaler

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

  • Air Tractor 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. 72 built.
  • Air Tractor AT-400A - AT-400 with 550 hp (410 kW) Pratt & Whitney Canada PT6A-20 engine. 14 built.
  • Air Tractor 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. 168 built.
  • Air Tractor AT-401A - AT-401 with PZL-3S engine. One built.
  • Air Tractor 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.
  • Air Tractor AT-402 - AT-401 with Pratt & Whitney Canada PT6A-15 engine. 68 built.
  • Air Tractor AT-402A - low cost version of AT-401B, with Pratt & Whitney Canada PT6A-20 engine. 103 built by December 2001.
  • Air Tractor AT-402B - improved version of AT-402, with revised wingtips and increased span of AT-401B. 31 built by December 2001.

Specifications (AT-401)

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 km/h)
Cruise speed: 143 mph (230 km/h)
Stall speed: 61 mph (99 km/h)
Range: 630 miles (1,014 km)
Rate of climb: 1,100 ft/min (5.6 m/s)

Last updated November 29, 2010
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Air Tractor AT-400".
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