# N104SY: 2016 Stephen L Yoho SONEX ONEX

- Status: Valid registration
- Airframe: [Stephen L Yoho SONEX ONEX](https://openairdocs.org/model/stephen-l-yoho-sonex-onex) (registry code 05635GA, 1 seats)
- Engine: [Sonex AEROVEE-2.1](https://openairdocs.org/engine/sonex-aerovee-2-1) (registry code 58201)
- Serial number: 0104
- Year built: 2016
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Kit: Sonex Aircraft LLC ONEX
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 17, 2019
- Certificate issued: July 6, 2016
- Expires: July 31, 2029
- Mode S code: A01537
- Registered owner: [Yoho Stephen L](https://openairdocs.org/faa-owner/YOHO%20STEPHEN%20L)
- Location: [Washington, WV](https://openairdocs.org/faa-place/WV/Washington)
- Owner type: Individual
- Owner's area on the map: 39.2085° N, 81.6641° W: Placed by OpenAirDocs at the center of ZIP code 26181, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=104SY
- Page: https://openairdocs.org/aircraft/N104SY

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 (Stephen L Yoho SONEX ONEX)

None in force.

### Matched by engine (Sonex AEROVEE-2.1)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N104SY.

## 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.

- [Incident 20171204022669I](https://openairdocs.org/incident/20171204022669I), Dec 4, 2017: 2016 Stephen Yoho SONEX ONEX (N104SY), Williamstown, WV, Minor damage. Pilot stated that upon takeoff roll he may have gotten up to 30 mph and all of a sudden the aircraft took a sharp left and went into the grass beside runway.…

## 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 Stephen L Yoho SONEX ONEX aircraft: https://openairdocs.org/model/stephen-l-yoho-sonex-onex/aircraft.md
- The Sonex AEROVEE-2.1 engine: https://openairdocs.org/engine/sonex-aerovee-2-1.md

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