Type certificate A17SW
Held today by Air Tractor INC.. It covers 13 models; about 739 aircraft on the U.S. register are built to the designs it names. Last revised May 19, 2020 (revision 15). 27 FAA orders name its designs, and 107 approved modifications build on it.
Models under this certificate 13
AT-504, AT-503A, AT-402B, AT-503, AT-401B, AT-501, AT-502A, AT-402A, AT-402, AT-502B, AT-401, AT-401A, AT-502
On this site
Air Tractor Inc AT-401 68 registeredAir Tractor Inc AT-402 160 registeredAir Tractor Inc AT-502 502 registeredAir Tractor Inc AT-504 9 registered
The data sheet on the FAA's site: the approved engines and propellers, weights, speeds and limits for each model.
FAA orders on these designs 27 · newest first
2022-03-212022-03-15 · Fuel Quantity Indicator · fuel system
2021-04-292021-05-14 · TE flap control system · flight controls
2009-06-012009-11-05 · Cracks in the engine mount · engine
2009-05-052006-08-08 R1 · Wing lower spar cap · airframe structure
2009-01-282008-26-01 · Overturn skid plate kit · other and general
2008-11-202008-21-08 · Rudder and vertical fin hinge · flight controls
2008-07-072008-11-17 · Overturn skid plate in the cockpit area · other and general
2008-06-122008-10-12 · Cracks in the engine mount · engine
Approved modifications 107 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/A17SW.json.