Type Record · As of May 3, 2026
AIR TRACTOR INC AT-401B
Fixed Wing Single Engine · P&W R1340 SERIES
Registered
17
Year Range
1994–2001
NTSB Events
14
Airworthiness Directives
24
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered AIR TRACTOR INC AT-401B aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- MN 11.8% 2
- KS 11.8% 2
- SD 5.9% 1
- NE 5.9% 1
- ND 5.9% 1
- NM 5.9% 1
- IA 5.9% 1
- OK 5.9% 1
- MO 5.9% 1
- TX 5.9% 1
+5 more states
By Decade of Manufacture
- 1990s 76.5% 13
- 2000s 5.9% 1
- Unknown 17.6% 3
02 / NTSB Records
Events involving AIR TRACTOR INC AT-401B aircraft
14 event(s) on file. Showing the most recent 14.
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Jun 15, 2023
N6106UHolyoke, Colorado
NTSB Docket → -
Sep 1, 2021
N5081WStorm Lake, Iowa
NTSB Docket → -
Aug 13, 2014
N9071ZCimarron, Kansas Serious
NTSB Docket → -
Jun 1, 2000
N5028QTHIBODAUX, Louisiana Serious
NTSB Docket → -
Jul 30, 1999
N61775EDELSTEIN, Illinois Serious
NTSB Docket → -
Jul 14, 1990
N6146WGRAND MARAIS, Minnesota Fatal
NTSB Docket → -
May 8, 1990
N9071ZMILLVILLE, New Jersey
NTSB Docket → -
Sep 2, 1988
N60117SANTA YNEZ, California
NTSB Docket → -
Jul 9, 1988
N6106UPALO ALTO, California Minor
NTSB Docket → -
Aug 13, 1982
N61775STRONGVILLE, Ohio
NTSB Docket → -
Jan 8, 1982
N6106UPULLMAN, Washington
NTSB Docket → -
Aug 16, 1980
N61173AMALIE, New Mexico Serious
NTSB Docket → -
Nov 6, 1972
N5006BLINDON, Colorado Fatal
NTSB Docket → -
Apr 11, 1964
N50013LAGUNA BEACH, California Minor
NTSB Docket →
03 / Airworthiness Directives
FAA directives applicable to AIR TRACTOR INC AT-401B
24 directive(s) on file. Showing the most recent 24.
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Mar 25, 2021
Airworthiness Directives; Air Tractor, Inc., Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Air Tractor, Inc., (Air Tractor) Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-504, AT-602, AT- 802, and AT-802A airplanes. This AD was prom…
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Jul 28, 2020
Airworthiness Directives; Air Tractor, Inc. Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for all Air Tractor, Inc. (Air Tractor) Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT- 402B, AT-501, AT-502, AT-502A, AT-502B, AT-503, AT-503A, AT-504, AT- 602, AT-802, and AT-802A airplanes. This propo…
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Mar 31, 2009
Airworthiness Directives; Air Tractor, Inc. Models AT-400, AT-401, AT-401B, AT-402, AT-402A, and AT-402B Airplanes
We are adopting a new airworthiness directive (AD) to revise AD 2006-08-08, which applies to certain Air Tractor, Inc. (Air Tractor) Models AT-400, AT-401, AT-401B, AT-402, AT-402A, and AT-402B airplanes. AD 2006-08-08 currently requires you to repetitively eddy current inspect the wing lower spar cap in order to reac…
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Dec 24, 2008
Airworthiness Directives; Air Tractor, Inc. Models AT-200, AT-300, AT-400, AT-500, AT-600, and AT-800 Series Airplanes
We are adopting a new airworthiness directive (AD) to supersede AD 2008-11-17, which applies to certain Air Tractor, Inc. Models AT-200, AT-300, AT-400, AT-500, AT-600, and AT-800 series airplanes. AD 2008-11-17 currently requires you to install an overturn skid plate kit or a modification to the overturn skid plate a…
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Dec 10, 2008
Airworthiness Directives; Air Tractor, Inc., Models AT-400, AT-401, AT-401B, AT-402, AT-402A, and AT-402B Airplanes
We propose to revise Airworthiness Directive (AD) 2006-08-08, which applies to certain Air Tractor, Inc. (Air Tractor), Models AT- 400, AT-401, AT-401B, AT-402, AT-402A, and AT-402B airplanes. AD 2006- 08-08 currently requires you to repetitively eddy current inspect the wing lower spar cap in order to reach the safe…
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Oct 23, 2008
Airworthiness Directives; Air Tractor, Inc. Models AT-200, AT-300, AT-400, AT-500, AT-600, and AT-800 Series Airplanes
We propose to supersede Airworthiness Directive (AD) 2008-11- 17, which applies to certain Air Tractor, Inc. Models AT-200, AT-300, AT-400, AT-500, AT-600, and AT-800 series airplanes. AD 2008-11-17 currently requires you to install an overturn skid plate kit or a modification to the overturn skid plate already instal…
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Nov 9, 2006
Airworthiness Directives; Air Tractor, Inc. Model AT-602 Airplanes
The FAA adopts a new airworthiness directive (AD) for all Air Tractor, Inc. (Air Tractor) Model AT-602 airplanes. This AD requires you to repetitively inspect (using the eddy current method) the wing center splice joint two outboard fastener holes on both of the wing main spar lower caps for fatigue cracking; repair o…
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Aug 9, 2006
Airworthiness Directives; Air Tractor, Inc. Model AT-602 Airplanes
The FAA proposes to revise an earlier proposed airworthiness directive (AD) that applies to all Air Tractor, Inc. (Air Tractor) Model AT-602 airplanes. The earlier NPRM would have required you to repetitively inspect (using the eddy current method) the wing center splice joint two outboard fastener holes on both of th…
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Aug 9, 2006
Airworthiness Directives; Air Tractor, Inc. Models AT-501, AT-502, AT-502A, AT-502B, and AT-503A Airplanes
The FAA proposes to revise an earlier proposed airworthiness directive (AD) that applies to certain Air Tractor, Inc. (Air Tractor) Models AT-502, AT-502A, AT-502B, and AT-503A airplanes, which proposes to supersede AD 2002-26-05. AD 2002-26-05 lowers the safe life for the wing lower spar caps for Models AT-502, AT-50…
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May 12, 2006
Airworthiness Directives; Air Tractor, Inc. Models AT-400; AT-401, AT-401B, AT-402, AT-402A, and AT-402B Airplanes
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Apr 19, 2006
Airworthiness Directives; Air Tractor, Inc. Models AT-400; AT-401, AT-401B, AT-402, AT-402A, and AT-402B Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Air Tractor, Inc. (Air Tractor) Models AT-400, AT-401, AT-401B, AT-402, AT-402A, and AT-402B airplanes. This AD requires you to lower the safe life for the wing lower spar cap for certain Models AT-402A and AT-402B airplanes and those that incorporate…
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Apr 19, 2006
Airworthiness Directives; Air Tractor, Inc. Models AT-802 and AT-802A Airplanes
The FAA is adopting a new airworthiness directive (AD) for all Air Tractor, Inc. (Air Tractor) Models AT-802 and AT-802A airplanes. This AD requires you to repetitively inspect (using the eddy current method) the two outboard fastener holes in both of the wing main spar lower caps at the center splice joint for cracks…
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Apr 17, 2006
Airworthiness Directives; Air Tractor, Inc. Model AT-501 Airplanes
The FAA is adopting a new airworthiness directive (AD) to revise AD 2002-11-05, which applies to certain Air Tractor, Inc. (Air Tractor) AT-400 series and Models AT-501, AT-802, and AT-802A airplanes. AD 2002-11-05 establishes a safe life for the wing lower spar cap. Since we issued AD 2002-11-05, we have received rep…
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Jul 30, 2004
Airworthiness Directives; Air Tractor, Inc. Models AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503A, AT-602, AT-802, and AT-802A Airplanes
The FAA supersedes Airworthiness Directive (AD) 2002-19-10, which applies to certain Air Tractor, Inc. (Air Tractor) Models AT-402, AT-402A, AT-402B, AT-602, AT-802, and AT-802A airplanes. AD 2002-19-10 currently requires you to repetitively inspect the upper longeron and upper diagonal tube on the left hand side of t…
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Jun 4, 2004
Airworthiness Directives; Air Tractor, Inc. Models AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503A, AT-602, AT-802, and AT-802A Airplanes
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Apr 9, 2004
Airworthiness Directives; Air Tractor, Inc. Models AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, AT-502A, AT-502B, AT-503A, AT-602, AT-802, and AT-802A Airplanes
The FAA proposes to supersede Airworthiness Directive (AD) 2002-19-10, which applies to certain Air Tractor, Inc. (Air Tractor) Models AT-402, AT-402A, AT-402B, AT-602, AT-802, and AT-802A airplanes. AD 2002-19-10 currently requires you to repetitively inspect the upper longeron and upper diagonal tube on the left han…
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Apr 3, 2003
Airworthiness Directives; Air Tractor, Inc. Models AT-300, AT-400, AT-400A, AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, and AT-502B Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Air Tractor, Inc. (Air Tractor) Models AT-300, AT- 400, AT-400A, AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT- 502, and AT-502B airplanes. This AD requires you to repetitively inspect the vertical fin front spar fitting for crack…
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Dec 27, 2002
Airworthiness Directives; Air Tractor, Inc. Models AT-300, AT-400, AT-400A, AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-502, and AT-502B Airplanes
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Air Tractor, Inc. (Air Tractor) Models AT-300, AT-400, AT-400A, AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT- 501, AT-502, and AT-502B airplanes. This proposed AD would require you to repetitively inspect the vertical fin f…
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May 31, 2002
Airworthiness Directives; Air Tractor, Inc. Models AT-400, AT-401, AT-401B, AT-402, AT-402A, AT-402B, AT-501, AT-802, and AT-802A Airplanes
This amendment supersedes Airworthiness Directive (AD) 2001- 10-04 R1, which lowered the safe life for the wing lower spar cap on certain Air Tractor, Inc. (Air Tractor) AT-400, AT-500, and AT-800 series airplanes. AD 2001-10-04 R1 resulted from numerous reports of cracks in the \3/8\-inch bolthole of the wing lower s…
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Dec 27, 2001
Airworthiness Directives; Air Tractor, Inc. AT-400, AT-500, and AT-800 Series Airplanes
This document proposes to supersede Airworthiness Directive (AD) 2001-10-04 R1, which lowered the safe life for the wing lower spar cap on certain Air Tractor, Inc. (Air Tractor) AT-400, AT-500, and AT-800 series airplanes. AD 2001-10-04 R1 resulted from numerous reports of cracks in the \3/8\-inch bolthole of the win…
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Jun 4, 2001
Airworthiness Directives; Air Tractor, Inc. AT-400, AT-500, and AT-800 Series Airplanes
This amendment revises AD 2001-10-04, which concerns certain Air Tractor, Inc. (Air Tractor) AT-400, AT-500, and AT-800 series airplanes. AD 2001-10-04 superseded AD 2000-14-51 and lowers the safe life for the wing lower spar cap on these airplanes. The AD was the result of numerous reports of cracks in the 3/8-inch b…
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May 16, 2001
Airworthiness Directives; Air Tractor, Inc. AT-400, AT-500, and AT-800 Series Airplanes
This amendment supersedes Airworthiness Directive (AD) 2000- 14-51, which requires inspection of the wing lower spar cap for cracks on Air Tractor, Inc. (Air Tractor) Models AT-501, AT-502, and AT-502A airplanes, and modification or replacement of any cracked wing lower spar cap. This AD lowers the safe life for the w…
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Dec 3, 1998
Airworthiness Directives; Air Tractor, Inc. AT-300, AT-400, and AT-500 Series Airplanes
This amendment supersedes Airworthiness Directive (AD) 96-23- 19, which currently requires installing a new flap actuator overtravel stop and a roll pin through the overtravel stop and jack screw on certain Air Tractor, Inc. (Air Tractor) Models AT-300, AT-400, and AT- 500 series airplanes. This AD requires replacing…
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Jul 21, 1998
Airworthiness Directives; Air Tractor, Inc. AT-300, AT-400, and AT-500 Series Airplanes
This document proposes to supersede Airworthiness Directive (AD) 96-23-19, which currently requires installing a new flap actuator overtravel stop and a roll pin through the overtravel stop and jack screw on certain Air Tractor, Inc. (Air Tractor) Models AT-300, AT-400, and AT-500 series airplanes. The proposed AD wou…
05 / Special Airworthiness Information Bulletins
Advisories applicable to AIR TRACTOR INC AT-401B
1 SAIB on file. SAIBs are FAA advisory notices — not mandatory like ADs, but worth reviewing for service bulletins and emerging issues.
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12/01/2017
SAIB CE-18-06
Flight Controls, Rudder Control System
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for AIR TRACTOR INC AT-401B
Advisory Circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 17 registered N-numbers
Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N39GJ | SD | 1997 | · | Look up ↗ |
| N401NE | NE | 1994 | · | Look up ↗ |
| N432DA | MN | 1997 | · | Look up ↗ |
| N50013 | ND | — | ● | Look up ↗ |
| N5006B | NM | 1996 | ● | Look up ↗ |
| N5028Q | KS | 1997 | ● | Look up ↗ |
| N5081W | IA | 1996 | ● | Look up ↗ |
| N6000Y | KS | 1995 | · | Look up ↗ |
| N6010U | OK | 1995 | · | Look up ↗ |
| N60117 | MO | 1994 | ● | Look up ↗ |
| N6099U | TX | — | · | Look up ↗ |
| N6106U | CO | 1995 | ● | Look up ↗ |
| N61173 | LA | 1996 | ● | Look up ↗ |
| N6146W | MT | — | ● | Look up ↗ |
| N61762 | AL | 1996 | · | Look up ↗ |
| N61775 | IL | 1996 | ● | Look up ↗ |
| N9071Z | MN | 2001 | ● | Look up ↗ |
Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)
05 / Sources & Methodology
Every count traces back to a primary US-government source
- FAA Aircraft Registry →
Refreshed Apr 27, 2026
Available
- NTSB CAROL →
Refreshed Apr 27, 2026
Available
- Federal Register (FAA Airworthiness Directives) →
Refreshed Apr 27, 2026
Available
We render counts and lists as the agency publishes them. Read the methodology →