# N529X: 1975 Garbrick 1928 LARK

- Status: Valid registration
- Airframe: [Garbrick 1928 LARK](https://openairdocs.org/model/garbrick-1928-lark) (registry code 0566023, 2 seats)
- Engine: [Menasco PIRATE C4](https://openairdocs.org/engine/menasco-pirate-c4) (registry code 43517)
- Data sheets: [TCDS TC 67](https://openairdocs.org/tcds/TC%2067) (Menasco Manufacturing Co.) (OpenAirDocs)
- Serial number: 1
- Year built: 1975
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, exhibition
- Airworthiness date: August 19, 2025
- Certificate issued: October 23, 2008
- Expires: July 31, 2028
- Mode S code: A6AC6A
- Registered owner: [Posey Michael](https://openairdocs.org/faa-owner/POSEY%20MICHAEL)
- Location: [Pipersville, PA](https://openairdocs.org/faa-place/PA/Pipersville)
- Owner type: Individual
- Owner's area on the map: 40.4228° N, 75.1178° W: Placed by OpenAirDocs at the center of ZIP code 18947, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=529X
- Page: https://openairdocs.org/aircraft/N529X

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): 1 in force

### Matched by airframe (Garbrick 1928 LARK)

None in force.

### Matched by engine (Menasco PIRATE C4)

- [AD 69-09-01](https://openairdocs.org/ad/69-09-01): Eisemann Magnetos · Eisemann Magnetos, 2A4-45-B2, 2A4-49-B2 and 158 more

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N529X.

## FAA accident and incident reports

None matched to N529X.

## 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) (1)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the engine (Menasco PIRATE C4)

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC

## Related

- Other Garbrick 1928 LARK aircraft: https://openairdocs.org/model/garbrick-1928-lark/aircraft.md
- The Menasco PIRATE C4 engine: https://openairdocs.org/engine/menasco-pirate-c4.md

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