Type Record · As of May 3, 2026
AIR TRACTOR INC AT-501
Fixed Wing Single Engine · P&W R1340 SERIES
Registered
4
Year Range
1987–1987
NTSB Events
0
Airworthiness Directives
34
Aircraft Resources
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered AIR TRACTOR INC AT-501 aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- MN 50.0% 2
- AR 25.0% 1
- ND 25.0% 1
By Decade of Manufacture
- 1980s 25.0% 1
- Unknown 75.0% 3
02 / NTSB Records
Events involving AIR TRACTOR INC AT-501 aircraft
No NTSB-recorded events match AIR TRACTOR INC AT-501 in the indexed corpus.
03 / Airworthiness Directives
FAA directives applicable to AIR TRACTOR INC AT-501
34 directive(s) on file. Showing the most recent 25 · 9 more in the Federal Register.
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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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Jun 2, 2008
Airworthiness Directives; Air Tractor, Inc. 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 2002-25-09, which applies to certain Air Tractor, Inc. (Air Tractor) AT-250, AT-300, AT-400, and AT-500 series airplanes. AD 2002-25-09 currently requires you to install an overturn skid plate in the cockpit area. Since we issued AD 2002-25-09, we rece…
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Mar 3, 2008
Airworthiness Directives; Air Tractor, Inc. AT-200, AT-300, AT-400, AT-500, AT-600, AT-800 Series Airplanes
We propose to supersede Airworthiness Directive (AD) 2002-25- 09, which applies to certain Air Tractor, Inc. (Air Tractor) AT-250, AT-300, AT-400, and AT-500 series airplanes. AD 2002-25-09 currently requires you to install an overturn skid plate in the cockpit area. Since we issued AD 2002-25-09, we received a report…
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Dec 4, 2006
Airworthiness Directives; Air Tractor, Inc. Models AT-501, AT-502, AT-502A, AT-502B, and AT-503A Airplanes
We are adopting a new airworthiness directive (AD) for certain Air Tractor, Inc. Models AT-501, AT-502, AT-502A, AT-502B, and AT-503A airplanes, which supersedes AD 2002- 26-05 and AD 2002-11-05 R1. Since we issued AD 2002-26-05 and AD 2002- 11-05 R1, we determined that additional airplanes should be added to the appl…
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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 10, 2006
Airworthiness Directives; Air Tractor, Inc. Model AT-501 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 14, 2005
Airworthiness Directives; Hartzell Propeller Inc. Models HC-B3TN-2, HC-B3TN-3, HC-B3TN-5, HC-B3MN-3, HC-B4TN-3, HC-B4TN-5, HC-B4MN-5, HC-B4MP-3, HC-B4MP-5, and HC-B5MP-3 Propellers
The FAA is adopting a new airworthiness directive (AD) for Hartzell Propeller Inc. models HC-B3TN-2, HC-B3TN-3, HC-B3TN-5, HC- B3MN-3, HC-B4TN-3, HC-B4TN-5, HC-B4MN-5, HC-B4MP-3, HC-B4MP-5, and HC- B5MP-3 propellers, installed with propeller mounting bolts, part number (P/N) B-3339. This AD requires initial and repeti…
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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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Dec 23, 2002
Airworthiness Directives; Air Tractor, Inc. Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-402, AT-402A, AT-501, AT-502, and AT-502A Airplanes
This amendment adopts a new airworthiness directive (AD) that applies to certain Air Tractor, Inc. (Air Tractor) Models AT-250, AT- 300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-402, AT-402A, AT-501, AT-502, and AT-502A airplanes. This AD requires you to install an overturn skid plate in the cockpit area.…
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Aug 29, 2002
Airworthiness Directives; Air Tractor, Inc. Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-402, AT-402A, AT-501, AT-502, and AT-502A Airplanes
This document proposes to adopt a new airworthiness directive (AD) that would apply to certain Air Tractor, Inc. (Air Tractor) Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT- 402, AT-402A, AT-501, AT-502, and AT-502A airplanes. This proposed AD would require you to install an overturn skid…
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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…
07 / PMA replacement parts
FAA-approved replacement parts for AIR TRACTOR INC AT-501
21 parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.
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H-502-1000#https://drs.faa.gov/browse/excelExternalWindow/13A0316D6472491486257D3300510A0D.0001##
Wire Cutter Installation
Hershey Flying Service, Inc. replaces Modification Part
PMA holder → -
59203#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID198564255720250417183015.0001##
CENTER BOOM WITH STRAINER 2 1/2" AT 502 - DROP SYSTEM
Texas Transland LLC replaces Modification Part
PMA holder → -
12469#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113503907120250417182852.0001##
WINDOW FRAME (54415 KIT) INNER FRAME
Texas Transland LLC replaces Modification Part
PMA holder → -
60672#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157482961520250417183021.0001##
GLASS (4"X15")
Texas Transland LLC replaces Modification Part
PMA holder → -
21523#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176394995720250417182859.0001##
40 MESHSCREEN
Texas Transland LLC replaces Modification Part
PMA holder → -
59003#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185769157320250417183007.0001##
CENTER BOOM WITH STRAINER AT - 502
Texas Transland LLC replaces Modification Part
PMA holder → -
59202#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119288032820250417183014.0001##
CENTER BOOM DROP SYS A/T 502
Texas Transland LLC replaces Modification Part
PMA holder → -
40890#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID154684293620250417182926.0001##
Frame (54415Window Kit)
Texas Transland LLC replaces Modification Part
PMA holder → -
59104#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID114309744020250417183012.0001##
CENTER BOOM DROP SYSTEM 54" W/ QD CAP
Texas Transland LLC replaces Modification Part
PMA holder → -
21613#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138744591420250417182901.0001##
SPRAY CONTROL HANDLE 504
Texas Transland LLC replaces Modification Part
PMA holder → -
54415#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149931731720250417182943.0001##
WINDOW KIT (6"X17") FRAMEA/T
Texas Transland LLC replaces Modification Part
PMA holder → -
56802#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180082429520250417183000.0001##
BOOM SHUT-OFF VALVE 2"
Texas Transland LLC replaces Modification Part
PMA holder → -
58483Q#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148470140520250417183003.0001##
VALVE 2- 1/2" W/QD ENDS A/T
Texas Transland LLC replaces Modification Part
PMA holder → -
206400-01#https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID401612549220210712183605.0001##
Air Tractor Windshield
Sierracin/Sylmar Corp replaces 10502-2
PMA holder → -
W/T-1152#https://drs.faa.gov/browse/excelExternalWindow/C6EE1B3DD127D99A86257367006BB021.0001##
AIR TRACTOR 502 DOOR WINDOW
Great Lakes Aero Products replaces 10211-2
PMA holder → -
W-1152#https://drs.faa.gov/browse/excelExternalWindow/8C45A38EC22E86DE86257367006BAFEA.0001##
AIR TRACTOR 502 DOOR WINDOW
Great Lakes Aero Products replaces 10211-2
PMA holder → -
W/G-1152#https://drs.faa.gov/browse/excelExternalWindow/0CBCCE64CB2BAE9086257367006BB04E.0001##
AIR TRACTOR 502 DOOR WINDOW
Great Lakes Aero Products replaces 10211-2
PMA holder → -
W-2465-LH, W/T-2465-LH, W/G-2465-LH, W-2465-RH, W/T-2465-RH, W/G-2465-RH#https://drs.faa.gov/browse/excelExternalWindow/79885462B332827286257292006ABF13.0001##
AIR TRACTOR AT-802 WINDSHIELD - LH or RH
Great Lakes Aero Products replaces 11197-1, 11197-2
PMA holder → -
W-2262-LH#https://drs.faa.gov/browse/excelExternalWindow/CAB3662A877CA252862572250074CE40.0001##
Air Tractor AT-502 Windshield - RH or LH
Great Lakes Aero Products replaces 10805-1
PMA holder → -
W/G-2262-LH#https://drs.faa.gov/browse/excelExternalWindow/94FFA2A4DF0C4A5A862572250074CE9C.0001##
Air Tractor AT-502 Windshield - RH or LH
Great Lakes Aero Products replaces 10805-1
PMA holder → -
W/T-2262-LH#https://drs.faa.gov/browse/excelExternalWindow/4B96CCCF9FDC2F6B862572250074CE6D.0001##
Air Tractor AT-502 Windshield - RH or LH
Great Lakes Aero Products replaces 10805-1
PMA holder →
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for AIR TRACTOR INC AT-501
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 4 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.
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 →