# N385SX: 2003 Schlegel Gustav SONEX

- Status: Valid registration
- Airframe: [Schlegel Gustav SONEX](https://openairdocs.org/model/schlegel-gustav-sonex) (registry code 056153J, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: GS001SX
- Year built: 2003
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: March 26, 2004
- Certificate issued: April 14, 2012
- Expires: April 30, 2028
- Mode S code: A46F83
- Registered owners: [Kuklo Robert M](https://openairdocs.org/faa-owner/KUKLO%20ROBERT%20M), [Ault Stanley K](https://openairdocs.org/faa-owner/AULT%20STANLEY%20K)
- Location: [Livermore, CA](https://openairdocs.org/faa-place/CA/Livermore)
- Owner type: Co-owned
- Owner's area on the map: 37.5199° N, 121.5756° W: Placed by OpenAirDocs at the center of ZIP code 94550, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=385SX
- Page: https://openairdocs.org/aircraft/N385SX

From the FAA registry file of October 22, 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 (Schlegel Gustav SONEX)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N385SX.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20040407007509I](https://openairdocs.org/incident/20040407007509I), Apr 7, 2004: Amtr SONEX (N385SX), Lone Jack, MO. (-23) Pilot was enroute from warrensburg, Missouri (9K4), to lee's summit, Missouri (klxt). The aircraft was an experimental amateur built owned by the pilot…

## 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 Schlegel Gustav SONEX aircraft: https://openairdocs.org/model/schlegel-gustav-sonex/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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