| 2021-05-14 | Air Tractor, Inc., Airplanes | Apr 29, 2021 | Airframe (AT-502B) |
| 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-502B)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; … |
| 2006-23-14 | Air Tractor, Inc. Models AT-502, AT-502A, AT-502B, AT-602, AT-802, and AT-802A Airplanes | Dec 21, 2006 | Airframe (AT-502B)Certain serial numbers: AT-502 502/502B-0003–502/502B-2600; AT-502B 502/502B-0003–502/502B-2600; AT-502A 502A-0003–502A-2582; AT-602 602-0337–602-1138; AT-802 802/802A-0001–802/802A-0215; AT-802A 802/802A-0001–802/802A-0215 |
| 2002-26-05 | Air Tractor, Inc. Models AT-502, AT-502A, AT-502B, and AT-503A Airplanes | Jan 15, 2003 | Airframe (AT-502B)Certain serial numbers: AT-502 0003–0236; AT-502A 0158–on; AT-502B 0187–on; AT-503A 0067–on. Only with: Safe life of the wing lower spar cap; separate safe-life calculation for airplanes with Marburger Enterprises, Inc. winglets installed per STC SA00490LA. |
| 98-25-01 | Air Tractor, Inc. AT-300, AT-400, and AT-500 Series Airplanes | Jan 19, 1999 | Airframe (AT-502B)Certain serial numbers: AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT-402B 300-0001–401B-1063; AT-501, AT-502, AT-502A, AT-502B, AT-503A 502-0001–502B-0500. Only with: Airplanes that do not have P/N 70975-1 flap actuator overtravel stop installed per Snow Engineering Co. Service Letter #165, dated May 15, 1998. |