# N6557: Koz Aero SOPWITH F1

- Status: Valid registration
- Airframe: [Koz Aero SOPWITH F1](https://openairdocs.org/model/koz-aero-sopwith-f1) (registry code 05633NN, 1 seats)
- Serial number: 337
- Type: Fixed wing single engine
- Engine type: Rotary
- Certificate issued: June 25, 2014
- Expires: June 30, 2027
- Mode S code: A8A29A
- Owner type: LLC
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6557
- Page: https://openairdocs.org/aircraft/N6557

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 (Koz Aero SOPWITH F1)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N6557.

## FAA accident and incident reports

None matched to N6557.

## 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.

## Earlier aircraft with N6557

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N6557 before.

- [Cancelled 1982-05-10](https://openairdocs.org/deregistered/N6557-1982-05-10): Schempp-Hirth CIRRUS, S/N 77. Exported to Canada. Owner: [Weinhold Steve](https://openairdocs.org/faa-owner/WEINHOLD%20STEVE), [Vernal, UT](https://openairdocs.org/faa-place/UT/Vernal)

## Related

- Other Koz Aero SOPWITH F1 aircraft: https://openairdocs.org/model/koz-aero-sopwith-f1/aircraft.md

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