# N4538K: Air Tractor AT-401, registration cancelled 1994-10-05

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 5, 1994
- Status when cancelled: Triennial form not returned
- Airframe: [Air Tractor AT-401](https://openairdocs.org/model/air-tractor-at-401) (registry code 0390204)
- Data sheets: [TCDS A17SW](https://openairdocs.org/tcds/A17SW) (OpenAirDocs)
- Serial number: 4010770
- Type of aircraft: Fixed wing single engine
- Certificate issued: July 31, 1991
- Last registry action: August 17, 1994
- Mode S code: A580BB
- Owner when cancelled: [Frontier Agricultural Service Inc](https://openairdocs.org/faa-owner/FRONTIER%20AGRICULTURAL%20SERVICE%20INC)
- Location: [Calexico, CA](https://openairdocs.org/faa-place/CA/Calexico)
- Owner type: Corporation
- Owner's area on the map: 32.6876° N, 115.5644° W: Placed by OpenAirDocs at the center of ZIP code 92231, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4538K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4538K
- Page: https://openairdocs.org/deregistered/N4538K-1994-10-05

From the FAA registry file of November 5, 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-401: https://openairdocs.org/model/air-tractor-at-401.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 LAX91LA302](https://openairdocs.org/ntsb/LAX91LA302), Jul 10, 1991: Air Tractor AT-401 (N4538K), Calexico, CA, destroyed. Probable cause: THE ERECTION OF A CONSTRUCTION SIGN ON AN ACTIVE RUNWAY BY COUNTY WORKERS WITHOUT NOTIFYING THE AIRPORT OPERATORS, AND, THE INABILITY OF THE PILOT TO DETECT THE PRESENCE OF THE SIGN DURING THE DARK…

## 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 19910709026639A](https://openairdocs.org/incident/19910709026639A), Jul 9, 1991: Airtrc AT401 (N4538K), Imperial, CA, Destroyed. Unknown to pilot barrier sign on runway prior night takeoff. Hit sign went around and struck hay bales on landing.

## Other aircraft with N4538K

- [Cancelled 1989-07-31](https://openairdocs.org/deregistered/N4538K-1989-07-31): Cessna P210N, S/N P21000211. N-number assigned, not yet registered

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