Air Tractor AT-400

Variants

• AT-400 - AT-301 with 680 shp Pratt & Whitney Canada PT6A-15AG engine and 400 US gal hopper. Short-span wings. 72 built.
• AT-400A - AT-400 with 550 hp Pratt & Whitney Canada PT6A-20 engine. 14 built.
• AT-401 - AT-301 with longer-span wings and 400 US gal hopper, powered by 600 hp Pratt & Whitney R-1340 radial engine. 168 built.
• AT-401A - AT-401 with PZL-3S engine. One built.
• AT-401B -Improved revision of AT-401, with revised wingtips and further increased span. 69 built by December 2001.
• AT-402 - AT-401 with Pratt & Whitney Canada PT6A-15 engine. 68 built.
• AT-402A - low cost version of AT-401B, with Pratt & Whitney Canada PT6A-20 engine. 103 built by December 2001.
• AT-402B - improved version of AT-402, with revised wingtips and increased span of AT-401B. 31 built by December 2001.

  Specifications (AT-401)