# N203RZ: 2018 Zielke Ronald W ZENITH 750

- Status: Valid registration
- Airframe: [Zielke Ronald W ZENITH 750](https://openairdocs.org/model/zielke-ronald-w-zenith-750) (registry code 05637II, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 75-8685
- Year built: 2018
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: November 28, 2018
- Certificate issued: January 14, 2023
- Expires: January 31, 2030
- Mode S code: A19EB7
- Registered owner: [Atherton Bruce C](https://openairdocs.org/faa-owner/ATHERTON%20BRUCE%20C)
- Location: [Marysville, OH](https://openairdocs.org/faa-place/OH/Marysville)
- Owner type: Individual
- Owner's area on the map: 40.2613° N, 83.3581° W: Placed by OpenAirDocs at the center of ZIP code 43040, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=203RZ
- Page: https://openairdocs.org/aircraft/N203RZ

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 (Zielke Ronald W ZENITH 750)

None in force.

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

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB ERA27LA008](https://openairdocs.org/ntsb/ERA27LA008), Oct 14, 2026: Zielke Ronald W Zenith 750 (N203RZ), Marysville, OH, investigation ongoing

## FAA accident and incident reports

None matched to N203RZ.

## 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 Zielke Ronald W ZENITH 750 aircraft: https://openairdocs.org/model/zielke-ronald-w-zenith-750/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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