# N225SH: 2025 Sonex SONEX HIGHWING

- Status: Valid registration
- Airframe: [Sonex SONEX HIGHWING](https://openairdocs.org/model/sonex-sonex-highwing) (registry code 056427H, 2 seats)
- Engine: [Ulpower UL350IS](https://openairdocs.org/engine/ulpower-ul350is) (registry code 62000)
- Serial number: SHX0001
- Year built: 2025
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, research and development
- Airworthiness date: July 10, 2026
- Certificate issued: June 11, 2025
- Expires: June 30, 2032
- Mode S code: A1F52C
- Registered owner: [Sonex LLC](https://openairdocs.org/faa-owner/SONEX%20LLC)
- Location: [Oshkosh, WI](https://openairdocs.org/faa-place/WI/Oshkosh)
- Owner type: LLC
- Owner's area on the map: 43.9441° N, 88.5348° W: Placed by OpenAirDocs at the center of ZIP code 54902, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=225SH
- Page: https://openairdocs.org/aircraft/N225SH

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 (Sonex SONEX HIGHWING)

None in force.

### Matched by engine (Ulpower UL350IS)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N225SH.

## FAA accident and incident reports

None matched to N225SH.

## 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 N225SH

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N225SH before.

- [Cancelled 1996-05-09](https://openairdocs.org/deregistered/N225SH-1996-05-09): Cessna 421B, S/N 421B0883. Exported to India. Owner: [Exchange Investment Corporation](https://openairdocs.org/faa-owner/EXCHANGE%20INVESTMENT%20CORPORATION), [Charleston, SC](https://openairdocs.org/faa-place/SC/Charleston)

## Related

- Other Sonex SONEX HIGHWING aircraft: https://openairdocs.org/model/sonex-sonex-highwing/aircraft.md
- The Ulpower UL350IS engine: https://openairdocs.org/engine/ulpower-ul350is.md

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