# N509RY: 1975 Yersak GREAT LAKES SPECIAL

- Status: Valid registration
- Airframe: [Yersak GREAT LAKES SPECIAL](https://openairdocs.org/model/yersak-great-lakes-special) (registry code 3910211, 2 seats)
- Engine: [Lycoming GO-435C&D series](https://openairdocs.org/engine/lycoming-go-435c-d-series) (registry code 41521)
- Serial number: 197
- Year built: 1975
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 19, 1980
- Certificate issued: February 26, 1997
- Expires: July 31, 2029
- Mode S code: A65CED
- Registered owner: [Tollini Paul D](https://openairdocs.org/faa-owner/TOLLINI%20PAUL%20D)
- Location: [Perkasie, PA](https://openairdocs.org/faa-place/PA/Perkasie)
- Owner type: Individual
- Owner's area on the map: 40.3962° N, 75.2312° W: Placed by OpenAirDocs at the center of ZIP code 18944, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=509RY
- Page: https://openairdocs.org/aircraft/N509RY

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. The registry lists only the engine series, so ADs for every Lycoming GO-435C&D model are included.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Yersak GREAT LAKES SPECIAL)

None in force.

### Matched by engine (Lycoming GO-435C&D series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N509RY.

## FAA accident and incident reports

None matched to N509RY.

## 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 Yersak GREAT LAKES SPECIAL aircraft: https://openairdocs.org/model/yersak-great-lakes-special/aircraft.md
- The Lycoming GO-435C&D series engine: https://openairdocs.org/engine/lycoming-go-435c-d-series.md

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