# N4441S: 1977 Air Tractor AT-302, registration cancelled 2014-10-17

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 17, 2014
- Exported to: Colombia
- Status when cancelled: Valid registration
- Airframe: [Air Tractor AT-302](https://openairdocs.org/model/air-tractor-at-302) (registry code 0390104)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Data sheets: [TCDS A9SW](https://openairdocs.org/tcds/A9SW) (OpenAirDocs)
- Serial number: 302-0101
- Year built: 1977
- Type of aircraft: Fixed wing single engine
- Airworthiness: Restricted, agriculture and pest control
- Airworthiness date: December 2, 1977
- Certificate issued: April 24, 1998
- Last registry action: September 12, 2014
- Mode S code: A55C05
- Owner when cancelled: [Helm Flying Service Inc](https://openairdocs.org/faa-owner/HELM%20FLYING%20SERVICE%20INC)
- Location: [Harvey, ND](https://openairdocs.org/faa-place/ND/Harvey)
- Owner type: Corporation
- Owner's area on the map: 47.7676° N, 99.8767° W: Placed by OpenAirDocs at the center of ZIP code 58341, within about 12 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4441S
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4441S
- Page: https://openairdocs.org/deregistered/N4441S-2014-10-17

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-302: https://openairdocs.org/model/air-tractor-at-302.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 LAX91DUJ03](https://openairdocs.org/ntsb/LAX91DUJ03), Nov 16, 1990: Air Tractor AT-302 (N4441S), Somerton, AZ, substantial damage. Probable cause: THE FAILURE OF THE NUMBER 3 EXHAUST VALVE WHICH LED TO AN ENGINE FAILURE AND SUBSEQUENT CRASH LANDING.

## 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 19901115050889A](https://openairdocs.org/incident/19901115050889A), Nov 15, 1990: Airtrc AT302 (N4441S), Somerton, AZ, Substantial damage. Engine quit on swath run. Nosed over on forced landing. Stuck valve caused cylinder to crack and engine failed.

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