N501BRAir Tractor INC AT-501
Safety record in brief:No NTSB accidents or incidents since 19827 ADs may apply1 service difficulty report
Registration
FAA Aircraft Registry · Oct 20, 2026- Registered owner
- Johnson Airspray INC
- Owner type
- Corporation
- City, state
- Argyle, MN
- Certificate issued
- Sep 25, 2020
- Expires
- Sep 30, 2027
- Airworthiness
- Restricted · Agriculture and Pest Control
- Airworthiness date
- Dec 20, 1990
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 dataAirframe
- Manufacturer
- Air Tractor INC
- Model
- AT-501
- Serial number
- 501-0123
- Aircraft type
- Fixed wing single engine
- Category
- Land
- Certification
- Type Certificated
- Seats
- 1
- Engines
- 1
- Max takeoff weight
- Up to 12,499 lb
- Type certificate data sheet
- A17SW
- Mode S code
- A63DD0
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- 2020 – nowJohnson Airspray INCArgyle, MN · current
Individual owners are shown by city and state only.
Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 20, 2026 · SDRs · Oct 16, 2026NTSB events (0)
No NTSB accidents or incidents found for this airframe since 1982.
ADs published since 1998 that may apply (7)
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.
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 2021-05-14 | Air Tractor, Inc., Airplanes | Apr 29, 2021 | Airframe (AT-501) |
| 2002-11-05 R1 | Air Tractor, Inc. Model AT-501 Airplanes | Apr 21, 2006 | Airframe (AT-501) |
| 2002-25-09 | Air Tractor, Inc. Models AT-250, AT-300, AT-301, AT-302, AT-400, AT-400A, AT-401… | Feb 10, 2003 | Airframe (AT-501)Certain serial numbers: AT-250 …–0829; AT-300 …–0829; AT-301 …–0829; AT-302 …–0829; AT-400 …–0829; AT-400A …–0829; … |
| 2000-14-51 | Air Tractor, Inc. Models AT-501, AT-502, and AT-502A Airplanes | Aug 4, 2000 | Airframe (AT-501)Certain serial numbers: AT-501 501-002–501-0060; AT-502 502-003–502-0061. Only with: AT-501 only if converted to turboprop power; AT-502 excludes those upgraded to 8,000-pound gross weight configuration via Snow Engineering Co. Service Letter #80J; AT-502A all serial numbers. |
| 99-11-02 | Pratt & Whitney R-1340 Series Reciprocating Engines | Jul 19, 1999 | Engine (R1340 SERIES) |
Show all 7 ADsShow fewer ADs
| AD | Subject | Effective | Applies to |
|---|---|---|---|
| 98-25-01 | Air Tractor, Inc. AT-300, AT-400, and AT-500 Series Airplanes | Jan 19, 1999 | Airframe (AT-501)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. |
| 96-24-08 | Air Tractor, Inc. Models AT-250, AT- 300, AT-301, AT-302, AT-400, AT-400A, AT-401… | Dec 23, 1996 | Airframe (AT-501)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 · cylinder · crackedDec 5, 1995
CYLINDER CRACKED COMPLETELY AT EXHAUST ROCKER ARM. THE ROCKER ARM CEASED TO FUNCTION THROWING THE FLOATING CAM RING OUT OF TIME. ENGINE QUIT, LANDED IN ROAD, CHANGED CYLINDER, FLEW HOME. SUSPECT POSSIBLE OVER-TORQUING OF ROCKER ARM SHAFT OR STUCK EXHAUST VALVE. RECOMMEND CHECKING ANY OIL LEAKS AT…
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