There are 11 Air Tractor AT-504 aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 2011 and 2025.
N173SH
2025 Air Tractor INC AT-504
Salt Lake City, UT
N504AT
2024 Air Tractor INC AT-504
Mattoon, IL
N504HW
2024 Air Tractor INC AT-504
Sacramento, CA
N148SH
2022 Air Tractor INC AT-504
Salt Lake City, UT
N149SH
2022 Air Tractor INC AT-504
Salt Lake City, UT
N504DD
2022 Air Tractor INC AT-504
Hollandale, WI
N3081Y
2015 Air Tractor INC AT-504
Jennings, LA
N970FA
2015 Air Tractor INC AT-504
Fort Morgan, CO
N30715
2014 Air Tractor INC AT-504
Olney, TX
N2033R
2011 Air Tractor INC AT-504
Cardington, OH
N305AT
Air Tractor INC AT-504
Dover, DE