# N191S: 1977 Sisler CYGNET SF-2A

- Status: Valid registration
- Airframe: [Sisler CYGNET SF-2A](https://openairdocs.org/model/sisler-cygnet-sf-2a) (registry code 0561396, 2 seats)
- Engine: [Volkswagen CONVERSION](https://openairdocs.org/engine/volkswagen-conversion) (registry code 63501)
- Serial number: 112
- Year built: 1977
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 19, 1979
- Certificate issued: January 26, 2016
- Expires: January 31, 2029
- Mode S code: A16D72
- Registered owner: [Viking Aircraft LLC](https://openairdocs.org/faa-owner/VIKING%20AIRCRAFT%20LLC)
- Location: [Elkhorn, WI](https://openairdocs.org/faa-place/WI/Elkhorn)
- Owner type: LLC
- Owner's area on the map: 42.7197° N, 88.5343° W: Placed by OpenAirDocs at the center of ZIP code 53121, 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=191S
- Page: https://openairdocs.org/aircraft/N191S

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 (Sisler CYGNET SF-2A)

None in force.

### Matched by engine (Volkswagen CONVERSION)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N191S.

## FAA accident and incident reports

None matched to N191S.

## 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 Sisler CYGNET SF-2A aircraft: https://openairdocs.org/model/sisler-cygnet-sf-2a/aircraft.md
- The Volkswagen CONVERSION engine: https://openairdocs.org/engine/volkswagen-conversion.md

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