| 2021-05-14 | Air Tractor, Inc., Airplanes | Apr 29, 2021 | Airframe (AT-502A) |
| 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-502A)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-502A)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-502A)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. |
| 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-502A)Certain serial numbers: AT-250 …–0829; AT-300 …–0829; AT-301 …–0829; AT-302 …–0829; AT-400 …–0829; AT-400A …–0829; … |