# N4550K: Air Tractor AT-402, registration cancelled 1997-12-24

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 24, 1997
- Exported to: Mexico
- Status when cancelled: Valid registration
- Airframe: [Air Tractor AT-402](https://openairdocs.org/model/air-tractor-at-402) (registry code 0390205)
- Data sheets: [TCDS A17SW](https://openairdocs.org/tcds/A17SW) (OpenAirDocs)
- Serial number: 4020804
- Type of aircraft: Fixed wing single engine
- Certificate issued: June 20, 1996
- Last registry action: June 20, 1996
- Mode S code: A58711
- Owners when cancelled: [Simpson Dan J](https://openairdocs.org/faa-owner/SIMPSON%20DAN%20J), [Simpson Lauren A](https://openairdocs.org/faa-owner/SIMPSON%20LAUREN%20A)
- Location: [Lewistown, MT](https://openairdocs.org/faa-place/MT/Lewistown)
- Owner type: Co-owned
- Owner's area on the map: 47.1397° N, 109.3109° W: Placed by OpenAirDocs at the center of ZIP code 59457, within about 18 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4550K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4550K
- Page: https://openairdocs.org/deregistered/N4550K-1997-12-24

From the FAA registry file of October 29, 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-402: https://openairdocs.org/model/air-tractor-at-402.md

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