| 2021-05-14 | Air Tractor, Inc., Airplanes | Apr 29, 2021 | Airframe (AT-401) |
| 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-401)Certain serial numbers: AT-250 …–0829; AT-300 …–0829; AT-301 …–0829; AT-302 …–0829; AT-400 …–0829; AT-400A …–0829; … |
| 2002-11-05 | Air Tractor, Inc. Models AT-400, AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501… | Jul 12, 2002 | Airframe (AT-401)Certain serial numbers: AT-400 0416–on; AT-401 0662–0951; AT-401B 0952–1014; AT-401B 1015; AT-401B 1016–1020; AT-401B 1021–1124; …. Only with: AT-802 and AT-802A airplanes equipped with factory-supplied P/N 80540 computerized fire gate are excluded; winglet usage factors apply to airplanes with Marburger Enterprises winglets per STC SA00490LA. |
| 99-11-02 | Pratt & Whitney R-1340 Series Reciprocating Engines | Jul 19, 1999 | Engine (R1340 SERIES) |
| 98-25-01 | Air Tractor, Inc. AT-300, AT-400, and AT-500 Series Airplanes | Jan 19, 1999 | Airframe (AT-401)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. |