# N694DS: William R Mason SONEX

- Status: Valid registration
- Airframe: [William R Mason SONEX](https://openairdocs.org/model/william-r-mason-sonex) (registry code 05634L8, 2 seats)
- Serial number: 001
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sonex Aircraft LLC SONEX
- Certificate issued: September 15, 2022
- Expires: September 30, 2029
- Mode S code: A939EE
- Registered owner: [Mason William R](https://openairdocs.org/faa-owner/MASON%20WILLIAM%20R)
- Location: [Belvidere, TN](https://openairdocs.org/faa-place/TN/Belvidere)
- Owner type: Individual
- Owner's area on the map: 35.0968° N, 86.1918° W: Placed by OpenAirDocs at the center of ZIP code 37306, 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=694DS
- Page: https://openairdocs.org/aircraft/N694DS

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 (William R Mason SONEX)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N694DS.

## FAA accident and incident reports

None matched to N694DS.

## 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 N694DS

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N694DS before.

- [Cancelled 2008-12-04](https://openairdocs.org/deregistered/N694DS-2008-12-04): Diamond Aircraft Ind DA 40, S/N 40.694, built 2006. Exported to Canada. Owner: [Diamond Aircraft Sales U S A Inc](https://openairdocs.org/faa-owner/DIAMOND%20AIRCRAFT%20SALES%20U%20S%20A%20INC), London Ontario

## Related

- Other William R Mason SONEX aircraft: https://openairdocs.org/model/william-r-mason-sonex/aircraft.md

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