# N6018: 1971 Sopwith PUP

- Status: Valid registration
- Airframe: [Sopwith PUP](https://openairdocs.org/model/sopwith-pup) (registry code 3630957, 1 seats)
- Engine: [Lerhone TYPE C](https://openairdocs.org/engine/lerhone-type-c) (registry code 40001)
- Serial number: A-635
- Year built: 1971
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 16, 1975
- Certificate issued: July 19, 2007
- Expires: October 31, 2027
- Mode S code: A7CE66
- Registered owner: [Windward Aviation Inc](https://openairdocs.org/faa-owner/WINDWARD%20AVIATION%20INC)
- Location: [Tukwila, WA](https://openairdocs.org/faa-place/WA/Tukwila)
- Owner type: Corporation
- Owner's area on the map: 47.5351° N, 122.3059° W: Placed by OpenAirDocs at the center of ZIP code 98108, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6018
- Page: https://openairdocs.org/aircraft/N6018

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 (Sopwith PUP)

None in force.

### Matched by engine (Lerhone TYPE C)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N6018.

## FAA accident and incident reports

None matched to N6018.

## 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 Sopwith PUP aircraft: https://openairdocs.org/model/sopwith-pup/aircraft.md
- The Lerhone TYPE C engine: https://openairdocs.org/engine/lerhone-type-c.md

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