# N4503U: Air Tractor AT-401, registration cancelled 2003-07-22

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 22, 2003
- 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: 401-0748
- Type of aircraft: Fixed wing single engine
- Certificate issued: March 18, 1991
- Last registry action: May 20, 2003
- Mode S code: A574F0
- Owner when cancelled: [Olson Arlen A](https://openairdocs.org/faa-owner/OLSON%20ARLEN%20A)
- Location: [Elm Creek, NE](https://openairdocs.org/faa-place/NE/Elm%20Creek)
- Owner type: Individual
- Owner's area on the map: 40.7052° N, 99.3773° W: Placed by OpenAirDocs at the center of ZIP code 68836, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4503U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4503U
- Page: https://openairdocs.org/deregistered/N4503U-2003-07-22

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-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 CHI93LA170](https://openairdocs.org/ntsb/CHI93LA170), May 14, 1993: Air Tractor AT-401 (N4503U), Oconto, NE, destroyed. Probable cause: THE PILOT'S INABILITY TO MAINTAIN ALTITUDE AFTER ENCOUNTERING A DOWNDRAFT.

## 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 19930514013739A](https://openairdocs.org/incident/19930514013739A), May 14, 1993: Airtrc AT401 (N4503U), Oconto, NE, Destroyed. Reported low clouds over spray field and a micro burst caused loss of altitude and ground impact.

## Other aircraft with N4503U

- [Cancelled 2007-10-05](https://openairdocs.org/deregistered/N4503U-2007-10-05): Sikorsky S-92A, S/N 920060, built 2007. Exported to Denmark. Owner: [Wells Fargo Bank Northwest Na Trustee](https://openairdocs.org/faa-owner/WELLS%20FARGO%20BANK%20NORTHWEST%20NA%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City)
- [Cancelled 1989-03-06](https://openairdocs.org/deregistered/N4503U-1989-03-06): Cessna 150D, S/N 15060503. Triennial form not returned

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