# N259WB: 2004 Brown William G SONEX 3300

- Status: Valid registration
- Airframe: [Brown William G SONEX 3300](https://openairdocs.org/model/brown-william-g-sonex-3300) (registry code 0561735, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 642
- Year built: 2004
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sonex Ltd SONEX
- Airworthiness: Experimental, amateur built
- Airworthiness date: October 7, 2004
- Certificate issued: December 20, 2025
- Expires: December 31, 2032
- Mode S code: A27AE3
- Registered owner: [Mangelsen Joseph S](https://openairdocs.org/faa-owner/MANGELSEN%20JOSEPH%20S)
- Location: [Bemidji, MN](https://openairdocs.org/faa-place/MN/Bemidji)
- Owner type: Individual
- Owner's area on the map: 47.5108° N, 94.8209° W: Placed by OpenAirDocs at the center of ZIP code 56601, within about 11 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=259WB
- Page: https://openairdocs.org/aircraft/N259WB

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 (Brown William G SONEX 3300)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N259WB.

## FAA accident and incident reports

None matched to N259WB.

## 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.

## Related

- Other Brown William G SONEX 3300 aircraft: https://openairdocs.org/model/brown-william-g-sonex-3300/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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