# N1146R: 2026 Ritter Thomas M SONEX-B

- Status: Valid registration
- Airframe: [Ritter Thomas M SONEX-B](https://openairdocs.org/model/ritter-thomas-m-sonex-b) (registry code 056427I, 2 seats)
- Engine: [Ulpower 350I](https://openairdocs.org/engine/ulpower-350i) (registry code 62001)
- Serial number: 0035
- Year built: 2026
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sonex LLC SONEX B
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 20, 2026
- Certificate issued: June 10, 2025
- Expires: June 30, 2032
- Mode S code: A03E49
- Registered owner: [Ritter Thomas M](https://openairdocs.org/faa-owner/RITTER%20THOMAS%20M)
- Location: [Lewes, DE](https://openairdocs.org/faa-place/DE/Lewes)
- Owner type: Individual
- Owner's area on the map: 38.7287° N, 75.1685° W: Placed by OpenAirDocs at the center of ZIP code 19958, 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=1146R
- Page: https://openairdocs.org/aircraft/N1146R

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 (Ritter Thomas M SONEX-B)

None in force.

### Matched by engine (Ulpower 350I)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N1146R.

## FAA accident and incident reports

None matched to N1146R.

## 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 N1146R

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N1146R before.

- [Cancelled 2001-04-09](https://openairdocs.org/deregistered/N1146R-2001-04-09): Raven Industries RX6, S/N RX6-218. Triennial form not returned. Owner: [Bruner Joe L](https://openairdocs.org/faa-owner/BRUNER%20JOE%20L), [Fairview, TN](https://openairdocs.org/faa-place/TN/Fairview)

## Related

- Other Ritter Thomas M SONEX-B aircraft: https://openairdocs.org/model/ritter-thomas-m-sonex-b/aircraft.md
- The Ulpower 350I engine: https://openairdocs.org/engine/ulpower-350i.md

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