# N129SX: 2009 Delius Steven E SONEX

- Status: Valid registration
- Airframe: [Delius Steven E SONEX](https://openairdocs.org/model/delius-steven-e-sonex) (registry code 05628G6, 2 seats)
- Engine: [Aerovee 2180](https://openairdocs.org/engine/aerovee-2180) (registry code 01400)
- Serial number: 475
- Year built: 2009
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Kit: Sonex Aircraft LLC SONEX
- Airworthiness: Experimental, amateur built
- Airworthiness date: September 30, 2009
- Certificate issued: February 18, 2025
- Expires: February 29, 2032
- Mode S code: A076C7
- Registered owners: [Robbins William T](https://openairdocs.org/faa-owner/ROBBINS%20WILLIAM%20T), [Stubblefield Daniel](https://openairdocs.org/faa-owner/STUBBLEFIELD%20DANIEL)
- Location: [Lake Havasu City, AZ](https://openairdocs.org/faa-place/AZ/Lake%20Havasu%20City)
- Owner type: Co-owned
- Owner's area on the map: 34.4769° N, 114.3441° W: Placed by OpenAirDocs at the center of ZIP code 86403, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=129SX
- Page: https://openairdocs.org/aircraft/N129SX

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 (Delius Steven E SONEX)

None in force.

### Matched by engine (Aerovee 2180)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N129SX.

## FAA accident and incident reports

None matched to N129SX.

## 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 Delius Steven E SONEX aircraft: https://openairdocs.org/model/delius-steven-e-sonex/aircraft.md
- The Aerovee 2180 engine: https://openairdocs.org/engine/aerovee-2180.md

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