Air_Tractor_AT-400 Knowpia

AT-400 family
	An AT-402 in operation, spraying a field in Washington State
Role	Agricultural aircraft
Manufacturer	Air Tractor
First flight	1979
Introduction	1980
Status	Active, in production
Produced	1979-present

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 edit

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]

AT-400A N3159D on display at the Steven F. Udvar-Hazy Center

AT-400A N3159D is on display at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. It is decorated in a livery depicting Dusty Crophopper from the 2013 animated film Planes, having been given the livery at the request of Disneytoon Studios prior to its acquisition by the museum.^[4]

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

General characteristics

Performance

Maximum speed: 156 mph (251 km/h, 136 kn) at sea level
Cruise speed: 120–140 mph (190–230 km/h, 100–120 kn) (typical working speed)
Stall speed: 61 mph (98 km/h, 53 kn) at 6,000 lb (2,700 kg) (max. landing weight) (flaps down)
Range: 630 mi (1,010 km, 550 nmi)
Rate of climb: 1,100 ft/min (5.6 m/s)

^ ^a ^b Taylor 1988, p. 323
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Jackson 2003, p. 507
^ ^a ^b ^c Lambert 1993, pp. 412–413
^ "Air Tractor AT-400A "Dusty Crophopper" | National Air and Space Museum". airandspace.si.edu. Retrieved 2024-02-13.

Jackson, Paul, ed. (2003). Jane's All The World's Aircraft 2003–2004. Coulsdon, UK: Jane's Information Group. ISBN 0-7106-2537-5.
Lambert, Mark, ed. (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., ed. (1988). Jane's All The World's Aircraft 1988-89. Coulsden, UK: Jane's Defence Data. ISBN 0-7106-0867-5.