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Aircraft record

N4345S1975 Air Tractor INC AT-301

DeregisteredUnclaimedSource: FAA, updated Oct 20, 2026

This N-number isn't registered right now. Below is its last known registration, canceled May 8, 2021.

Safety record in brief:1 NTSB accident (substantial damage, Aug 2011)6 ADs may apply1 service difficulty report

Registration
Deregistered
Last based in
Omro, WI
owner city / state
Owners
1
since 2010
NTSB events
1
substantial, 2011
ADs may apply
6
confirm with A&P
Service reports
1
since 1995

Registration

FAA Aircraft Registry · Oct 20, 2026
Last registered owner
Kafer Stone Applicator Service INC
Owner type
Corporation
City, state
Omro, WI
Certificate issued
Jun 14, 2010
Canceled
May 8, 2021
Airworthiness
Restricted · Agriculture and Pest Control
Airworthiness date
Dec 2, 1975

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Air Tractor INC
Model
AT-301
Year
1975
Serial number
301-0025
Aircraft type
Fixed wing single engine
Category
Land
Certification
Type Certificated
Seats
1
Engines
1
Max takeoff weight
Up to 12,499 lb
Mode S code
A53512

Engine

Make and model
P&W R1340 Series
Type
Reciprocating
Power
600 hp

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 2010 – 2021Kafer Stone Applicator Service INCOmro, WI

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Accident · substantial damage

Aug 4, 2011 · Nekoosa, WI

A total loss of engine power during initial climb for undetermined reasons.

Damage
Substantial
Injuries
None
Report
CEN11FA562

From NTSB records; matched by serial number.Read NTSB report (search CAROL for CEN11FA562)

Accident history for this model

ADs published since 1998 that may apply (6)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2021-05-14Air Tractor, Inc., AirplanesApr 29, 2021Airframe (AT-301)
2008-09-10Air Tractor, Inc. Models AT-300, AT-301, AT-302, AT-400, and AT-400A AirplanesMay 8, 2008Airframe (AT-301)Certain serial numbers: AT-400 400-0244–400-0415. Only with: Airplanes that have aluminum spar caps (including AT-300 and AT-301 airplanes converted to turbine power).
2002-25-09Air Tractor, Inc. Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401…Feb 10, 2003Airframe (AT-301)Certain serial numbers: AT-250 …–0829; AT-300 …–0829; AT-301 …–0829; AT-302 …–0829; AT-400 …–0829; AT-400A …–0829; …
99-11-02Pratt & Whitney R-1340 Series Reciprocating EnginesJul 19, 1999Engine (R1340 SERIES)
98-25-01Air Tractor, Inc. AT-300, AT-400, and AT-500 Series AirplanesJan 19, 1999Airframe (AT-301)Certain serial numbers: AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401, AT-401A, AT-401B, AT-402, AT-402A, AT-402B 300-0001–401B-1063; AT-501, AT-502, AT-502A, AT-502B, AT-503A 502-0001–502B-0500. Only with: Airplanes that do not have P/N 70975-1 flap actuator overtravel stop installed per Snow Engineering Co. Service Letter #165, dated May 15, 1998.
Show all 6 ADs
ADSubjectEffectiveApplies to
96-24-08Air Tractor, Inc. Models AT-250, AT- 300, AT-301, AT-302, AT-400, AT-400A, AT-401…Dec 23, 1996Airframe (AT-301)Certain serial numbers: AT-250 250-0491; AT-300 300-0001–300-0708; AT-301 301-0001–301-0708; AT-302 302-0001–302-0708; AT-400 400-0001–400-0708; AT-400A 400A-0001–400A-0708; …. Only with: Equipped with a Gerdes P/N A-850-5 or Cleveland P/N 60-9 parking brake valve.

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (1)

Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.

  • Reciprocating engine · engine · power lossAug 4, 2011

    TOTAL LOSS OF POWER ON TAKEOFF. 500 HOURS SINCE O/H.

    From FAA Service Difficulty Reports; matched by N-number and serial number.

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 20, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 20, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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