AT-401B

Productive Economy

The AT-401B is a 400-gallon workhorse powered by the Pratt & Whitney R-1340 radial engine. It has all the rugged durability, safety features, clean aerodynamics and flying ease for which Air Tractor aircraft are famous – with the economical price of a piston engine plane. The AT-401B delivers unsurpassed value – economically, efficiently and productively.

Specifications
Engine Type: P&W R1340
Engine S.H.P.: 600 @ 2250 RPM
Propeller: 12D40 hub 6101A-12 blades
Take-Off Weight: 7,860 lbs. (3 565 kg)
Landing Weight: 6,000 lbs. (2 722 kg)
Empty Wt. w/Spray Equip.: 4,244 lbs. (1 925 kg)
Useful Load: 3,616 lbs. (1 640 kg)
Hopper Capacity: 400 U.S. gal. (1 514 L)
Fuel Capacity: 126 U.S. gal. (476 L)
Wing Span: 51 ft. (15,54 m)
Wing Area: 306 sq. ft. (28,45 m2)
Main Wheel Size: 8.50 x 10
Tail Wheel Size: 5.00 x 5
Performance
Cruise Speed: 143 mph (230 kph) at 4,000 ft (1 219 kph)
Working Speed (Typical): 120-140 mph (193-225 kph)
Range, Economy Cruise at 8,000 ft.: 630 mi (1 014 km)
Stall Speed, Flaps Up: 73 mph (117 kph) at 6,000 lbs (2 722 kg)
Stall Speed, Flaps Down: 61 mph (98 kph) at 6,000 lbs (2 722 kg)
Stall Speed as Usually Landed: 54 mph (87 kph)
Rate of Climb: 520 fpm (158 mpm) at 7,860 lbs (3 565 kg)
Take-Off Distance: 1,318 ft (402 m) at 7,860 lbs (3 565 kg)