# N237F: 1987 Zig Berzins CYGNET

- Status: Valid registration
- Airframe: [Zig Berzins CYGNET](https://openairdocs.org/model/zig-berzins-cygnet) (registry code 05634E6, 2 seats)
- Engine: [Greatplain GREATPLAIN VW](https://openairdocs.org/engine/greatplain-greatplain-vw) (registry code 31500)
- Serial number: 148
- Year built: 1987
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: July 9, 2015
- Certificate issued: April 20, 2018
- Expires: April 30, 2028
- Mode S code: A222FE
- Registered owner: [Naiva Matthew W](https://openairdocs.org/faa-owner/NAIVA%20MATTHEW%20W)
- Location: [Wauwatosa, WI](https://openairdocs.org/faa-place/WI/Wauwatosa)
- Owner type: Individual
- Owner's area on the map: 43.0488° N, 88.0018° W: Placed by OpenAirDocs at the center of ZIP code 53213, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=237F
- Page: https://openairdocs.org/aircraft/N237F

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 (Zig Berzins CYGNET)

None in force.

### Matched by engine (Greatplain GREATPLAIN VW)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N237F.

## FAA accident and incident reports

None matched to N237F.

## 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 Zig Berzins CYGNET aircraft: https://openairdocs.org/model/zig-berzins-cygnet/aircraft.md
- The Greatplain GREATPLAIN VW engine: https://openairdocs.org/engine/greatplain-greatplain-vw.md

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