# N4376: 1990 Kitfox MODEL II

- Status: Valid registration
- Airframe: [Kitfox MODEL II](https://openairdocs.org/model/kitfox-model-ii) (registry code 05904UA, 2 seats)
- Engine: [Rotax 670](https://openairdocs.org/engine/rotax-670) (registry code 55598)
- Serial number: 721
- Year built: 1990
- Type: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, operating light-sport kit-built
- Airworthiness date: February 7, 2024
- Certificate issued: July 19, 2023
- Expires: July 31, 2030
- Mode S code: A54049
- Registered owner: [Durden David J](https://openairdocs.org/faa-owner/DURDEN%20DAVID%20J)
- Location: [Laredo, TX](https://openairdocs.org/faa-place/TX/Laredo)
- Owner type: Individual
- Owner's area on the map: 27.8338° N, 99.6814° W: Placed by OpenAirDocs at the center of ZIP code 78045, within about 15 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4376
- Page: https://openairdocs.org/aircraft/N4376

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Kitfox MODEL II)

None in force.

### Matched by engine (Rotax 670)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N4376.

## FAA accident and incident reports

None matched to N4376.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N4376

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4376 before.

- [Cancelled 1974-01-30](https://openairdocs.org/deregistered/N4376-1974-01-30): Sikorsky UH-19D, S/N 57-1617, built 1957. Owner: [State Of Oklahoma](https://openairdocs.org/faa-owner/STATE%20OF%20OKLAHOMA), [Stillwater, OK](https://openairdocs.org/faa-place/OK/Stillwater)

## Related

- Other Kitfox MODEL II aircraft: https://openairdocs.org/model/kitfox-model-ii/aircraft.md
- The Rotax 670 engine: https://openairdocs.org/engine/rotax-670.md

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