Air Tractor AT-400

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]

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

General characteristics

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)

Wikimedia Commons has media related to Air Tractor AT-400.

Jackson, Paul (2003). Jane's All The World's Aircraft 2003–2004. Coulsdon, UK: Jane's Information Group. ISBN 0-7106-2537-5.
Lambert, Mark (1993). Jane's All The Worlds Aircraft 1993-94. Coudsdon, UK: Janes's Data Division. ISBN 0-7106-1066-1.
Simpson, R. W. (1995). Airlife's General Aviation. Shrewsbury: Airlife Publishing. pp. 31–32.
Taylor, John W.R. (editor) (1988). Jane's All The World's Aircraft 1988-89. Coulsden, UK: Jane's Defence Data. ISBN 0-7106-0867-5.

Aircraft produced by Air Tractor

AT-300 AT-301 AT-302 AT-400 AT-401 AT-402 AT-501 AT-502 AT-503 AT-503T AT-602 AT-802 AT-802U Fire Boss

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