There are 18 Air Tractor AT-401B 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 1994 and 2001.
N9071Z
2001 Air Tractor INC AT-401B
Argyle, MN
N39GJ
1997 Air Tractor INC AT-401B
Ipswich, SD
N432DA
1997 Air Tractor INC AT-401B
Belview, MN
N5028Q
1997 Air Tractor INC AT-401B
Ulysses, KS
N5006B
1996 Air Tractor INC AT-401B
Albuquerque, NM
N5081W
1996 Air Tractor INC AT-401B
Storm Lake, IA
N60747
1996 Air Tractor INC AT-401B
Xxx, OK
N61173
1996 Air Tractor INC AT-401B
Cottonport, LA
N61762
1996 Air Tractor INC AT-401B
Foley, AL
N61775
1996 Air Tractor INC AT-401B
Marquette Heights, IL
N6000Y
1995 Air Tractor INC AT-401B
Goodland, KS
N6010U
1995 Air Tractor INC AT-401B
Hooker, OK
N6106U
1995 Air Tractor INC AT-401B
Holyoke, CO
N401NE
1994 Air Tractor INC AT-401B
Humphrey, NE
N60117
1994 Air Tractor INC AT-401B
Harrisonville, MO
N50013
Air Tractor INC AT-401B
Drayton, ND
N6099U
Air Tractor INC AT-401B
Mission, TX
N6146W
Air Tractor INC AT-401B
Hamilton, MT