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AIR TRACTOR INC AT-400

30 registered · 1980–1986 · 4 NTSB events · 48 ADs

About this data

Fixed Wing Single Engine · P&W PT6A SERIES · as of Sep 21, 2026

Resources Manufacturer · Air Tractor ↗ Engine · Pratt & Whitney Canada ↗ Search FAA TCDS ↗

Distribution · currently registered

By state (top 10)

  • MI 13.3% 4
  • KS 10.0% 3
  • IL 10.0% 3
  • OK 10.0% 3
  • TX 6.7% 2
  • MS 6.7% 2
  • GA 6.7% 2
  • DE 6.7% 2
  • LA 3.3% 1
  • MO 3.3% 1

+7 more states

By decade of manufacture

  • 1980s 76.7% 23
  • Unknown 23.3% 7

NTSB records

4 event(s) on file. Showing the most recent 4.

Airworthiness directives

48 directive(s) on file. Showing the most recent 25 · 23 more in the Federal Register.

  • 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…

  • 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…

  • Jul 27, 2020

    Airworthiness Directives; GE Aviation Czech s.r.o. Turboprop Engines (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.)

    The FAA is adopting a new airworthiness directive (AD) for all GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, M601F, H80, H80-100, H80-200, H75-100, H75-200, H85-100, and H85-200 model turboprop engines. This AD was prompted by a review by the manufacturer that identified the possibilit…

  • Feb 4, 2020

    Airworthiness Directives; GE Aviation Czech s.r.o. Turboprop Engines

    The FAA is revising an earlier proposal for all GE Aviation Czech s.r.o. M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, M601F, H80, H80-100, H80-200, H75-100, H75-200, H85-100, and H85-200 turboprop engines. This action revises the notice of proposed rulemaking (NPRM) by revising the compliance time requirement…

  • Aug 25, 2010

    Airworthiness Directives; Air Tractor, Inc. Models AT-802 and AT-802A Airplanes

    We are adopting a new airworthiness directive (AD) to supersede AD 2010-13-08, which applies to all Air Tractor, Inc. (Air Tractor) Models AT-802 and AT-802A airplanes. AD 2010-13-08 currently requires you to repetitively inspect (using the eddy current method) the two outboard fastener holes in both of the wing main…

  • Aug 6, 2009

    Airworthiness Directives; Air Tractor, Inc. Models AT-802 and AT-802A Airplanes

    We propose to supersede Airworthiness Directive (AD) 2006-08- 09, which applies to all Air Tractor, Inc. (Air Tractor) Models AT-802 and AT-802A airplanes. AD 2006-08-09 currently requires you to repetitively inspect (using the eddy current method) the two outboard fastener holes in both of the wing main spar lower ca…

  • May 22, 2009

    Airworthiness Directives; Air Tractor, Inc. Models AT-400, AT-400A, AT-402, AT-402A, AT-402B, AT-502, AT-502A, AT-502B, AT-503A, AT-602, AT-802, and AT-802A Airplanes

    We are adopting a new airworthiness directive (AD) to supersede AD 2008-10-12, which applies to certain Air Tractor, Inc. AT- 400, AT-500, AT-600, and AT-800 series airplanes. AD 2008-10-12 currently requires repetitively inspecting the engine mounts for cracks, repairing any crack damage found, and installing gussets…

  • 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…

  • 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…

  • 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…

  • 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…

  • 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…

  • May 8, 2008

    Airworthiness Directives; Air Tractor, Inc. AT-400, AT-500, AT-600, and AT-800 Series Airplanes

    We are adopting a new airworthiness directive (AD) to supersede AD 2007-13-17, which applies to certain Air Tractor, Inc. (Air Tractor) Models AT-602, AT-802, and AT-802A airplanes. AD 2007-13- 17 currently requires you to repetitively inspect the engine mount for any cracks, repair or replace any cracked engine mount…

  • Apr 28, 2008

    Airworthiness Directives; Air Tractor, Inc. Models AT-300, AT-301, AT-302, AT-400, and AT-400A Airplanes

    The FAA is adopting a new airworthiness directive (AD) to supersede AD 2003-06-01, which applies to all Air Tractor, Inc. (Air Tractor) Models AT-300, AT-301, AT-302, and AT-400A airplanes that have aluminum spar caps; certain Air Tractor Models AT-400 airplanes that have aluminum spar caps; and all Models AT-300 and…

  • 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…

  • Dec 14, 2007

    Airworthiness Directives; Air Tractor, Inc. AT-400, AT-500, AT-600, and AT-800 Series Airplanes

    We are revising an earlier proposed airworthiness directive (AD) that applies to certain Air Tractor, Inc. (Air Tractor) AT-400, AT-500, AT-600, and AT-800 series airplanes. The earlier NPRM proposed to supersede Airworthiness Directive (AD) 2007-13-17, which applies to certain Air Tractor Models AT-602, AT-802, and A…

  • Nov 30, 2007

    Airworthiness Directives; Air Tractor, Inc. Models AT-400, AT-500, AT-600, and AT-800 Series Airplanes

    We propose to supersede Airworthiness Directive (AD) 2007-13- 17, which applies to all Air Tractor, Inc. (Air Tractor) Models AT-602, AT-802, and AT-802A airplanes. AD 2007-13-17 currently requires you to repetitively inspect the engine mount for any cracks, repair or replace any cracked engine mount, and report any c…

  • 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…

  • 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…

  • 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…

  • May 12, 2006

    Airworthiness Directives; Air Tractor, Inc. Models AT-400; AT-401, AT-401B, AT-402, AT-402A, and AT-402B Airplanes

  • 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…

  • 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…

  • 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…

  • Sep 9, 2005

    Airworthiness Directives; Goodrich De-icing and Specialty Systems “FASTprop” Propeller De-icers

    The FAA is adopting a new airworthiness directive (AD) for Goodrich De-icing and Specialty Systems "FASTprop" propeller de- icers, part numbers P4E1188 series, P4E1601 series, P4E2200 series, P4E2271-10, P4E2575-7, P4E2575-10, P4E2598-10, P5855BSW, P6199SW, P6592SW, P6662SW, and P6975-11, installed. This AD requires i…

SAIBs · 2 on file · advisory, not mandatory

PMA replacement parts · 60+ on file

+ 20 more PMA parts on file

Registered N-numbers · 30

30 of 30 ● NTSB events on file · orange tails have Atlas pages · Look up queries the live FAA registry (owner, address, last airworthiness)
N-number St Year NTSB FAA
N144KS MI 1986 · Look up ↗
N2254L KS 1985 · Look up ↗
N2306A LA 1981 · Look up ↗
N23618 IL 1981 · Look up ↗
N23649 OK 1981 · Look up ↗
N23744 IL 1982 · Look up ↗
N2393N MO — · Look up ↗
N3160Q TX 1982 · Look up ↗
N31626 CA 1983 · Look up ↗
N3164B MS 1984 · Look up ↗
N3166Y GA 1984 · Look up ↗
N3652Z OK 1980 · Look up ↗
N3654G AR — ● Look up ↗
N3655T TX — · Look up ↗
N3659N IA — ● Look up ↗
N400XX OK 1986 · Look up ↗
N432WA IL — · Look up ↗
N444AS MI 1982 · Look up ↗
N444MS MI — · Look up ↗
N501JK KS — · Look up ↗
N6072Y UT 1981 · Look up ↗
N6082Y WI 1980 · Look up ↗
N73005 DE 1985 · Look up ↗
N7300E MS 1984 · Look up ↗
N7307T MI 1985 · Look up ↗
N73080 ND 1985 ● Look up ↗
N73084 KS 1985 · Look up ↗
N7308A NM 1985 · Look up ↗
N81400 DE 1981 · Look up ↗
N82400 GA 1981 · Look up ↗

Source — FAA Aircraft Registry

Sources