# N573D: 2009 Doerner Thomas D SONEX

- Status: Valid registration
- Airframe: [Doerner Thomas D SONEX](https://openairdocs.org/model/doerner-thomas-d-sonex) (registry code 056244M, 2 seats)
- Engine: [Volkswagen CONVERSION](https://openairdocs.org/engine/volkswagen-conversion) (registry code 63501)
- Serial number: 573
- Year built: 2009
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sonex Aircraft LLC SONEX
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 21, 2009
- Certificate issued: March 31, 2021
- Expires: March 31, 2028
- Mode S code: A759D9
- Registered owner: [Swisher Michael S](https://openairdocs.org/faa-owner/SWISHER%20MICHAEL%20S)
- Location: [Yukon, OK](https://openairdocs.org/faa-place/OK/Yukon)
- Owner type: Individual
- Owner's area on the map: 35.5184° N, 97.7662° W: Placed by OpenAirDocs at the center of ZIP code 73099, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=573D
- Page: https://openairdocs.org/aircraft/N573D

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 (Doerner Thomas D SONEX)

None in force.

### Matched by engine (Volkswagen CONVERSION)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N573D.

## FAA accident and incident reports

None matched to N573D.

## 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 Doerner Thomas D SONEX aircraft: https://openairdocs.org/model/doerner-thomas-d-sonex/aircraft.md
- The Volkswagen CONVERSION engine: https://openairdocs.org/engine/volkswagen-conversion.md

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