# N3660U: 1981 Air Tractor AT-301, registration cancelled 2009-06-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: June 23, 2009
- Exported to: Mexico
- Status when cancelled: Sale reported
- Airframe: [Air Tractor AT-301](https://openairdocs.org/model/air-tractor-at-301) (registry code 0390103)
- Engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016)
- Data sheets: [TCDS A9SW](https://openairdocs.org/tcds/A9SW) (OpenAirDocs)
- Serial number: 301-0337
- Year built: 1981
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: February 17, 1981
- Last registry action: June 9, 2009
- Mode S code: A42501
- Location: [Xxx, OK](https://openairdocs.org/faa-place/OK/Xxx)
- Owner type: Individual
- Owner's area on the map: 35.4707° N, 97.5191° W: Placed by OpenAirDocs at the center of ZIP code 73102, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N3660U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3660U
- Page: https://openairdocs.org/deregistered/N3660U-2009-06-23

From the FAA registry file of November 4, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Air Tractor AT-301: https://openairdocs.org/model/air-tractor-at-301.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA95LA161](https://openairdocs.org/ntsb/SEA95LA161), Jul 24, 1995: Air Tractor AT-301 (N3660U), Havre, MT, substantial damage. Probable cause: the loss of power due to a failure of the cylinder head exhaust valve rocker box. The tall crop encountered during the forced landing is a factor.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19950724045279A](https://openairdocs.org/incident/19950724045279A), Jul 24, 1995: Airtrc AT301 (N3660U), Havre, MT, Substantial damage. Lost power on spray run. Wing caught in tall barley. Cartwheeled. Rocker arm boss failed in fatigue.

## Other aircraft with N3660U

- [Cancelled 1973-03-14](https://openairdocs.org/deregistered/N3660U-1973-03-14): Cessna 182G, S/N 18255060. Exported to Canada. Owner: [Montgomery J M Jr](https://openairdocs.org/faa-owner/MONTGOMERY%20J%20M%20JR)

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