| 2021-05-14 | Air Tractor, Inc., Airplanes | Apr 29, 2021 | Airframe (AT-400A) |
| 2009-11-05 | Air Tractor, Inc. Models AT-400, AT-400A, AT-402, AT-402A, AT-402B, AT-502, AT-502A… | Jun 1, 2009 | Airframe (AT-400A)Certain serial numbers: AT-400 -0001–-1175; AT-400A -0001–-1175; AT-402 -0001–-1175; AT-402A -0001–-1175; AT-402B -0001–-1175; AT-502 -0001–-2597; … |
| 2008-09-10 | Air Tractor, Inc. Models AT-300, AT-301, AT-302, AT-400, and AT-400A Airplanes | May 8, 2008 | Airframe (AT-400A)Certain serial numbers: AT-400 400-0244–400-0415. Only with: Airplanes that have aluminum spar caps (including AT-300 and AT-301 airplanes converted to turbine power). |
| 2002-25-09 | Air Tractor, Inc. Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401… | Feb 10, 2003 | Airframe (AT-400A)Certain serial numbers: AT-250 …–0829; AT-300 …–0829; AT-301 …–0829; AT-302 …–0829; AT-400 …–0829; AT-400A …–0829; … |
| 2002-23-13 | Pratt & Whitney Canada PT6A Series Turboprop Engines | Dec 31, 2002 | Engine (PT6A-15AG)Only with: Engines with turbine exhaust ducts P/N 3012290, 3031988, 3032117, 3035784, 3035786, 3105890-01, 3112167-01, or 3111780-01 installed. |