# N591CK: 2021 William N Wirth AL18

- Status: Valid registration
- Airframe: [William N Wirth AL18](https://openairdocs.org/model/william-n-wirth-al18) (registry code 0563932, 2 seats)
- Engine: [Continental OX-340 series](https://openairdocs.org/engine/continental-ox-340-series) (registry code 17489)
- Serial number: AL-347
- Year built: 2021
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Kit: American Legend Aircraft Co AL18
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 8, 2021
- Certificate issued: April 1, 2021
- Expires: April 30, 2028
- Mode S code: A7A15A
- Registered owner: [Wirth William N](https://openairdocs.org/faa-owner/WIRTH%20WILLIAM%20N)
- Location: [Wauwatosa, WI](https://openairdocs.org/faa-place/WI/Wauwatosa)
- Owner type: Individual
- Owner's area on the map: 43.0488° N, 88.0018° W: Placed by OpenAirDocs at the center of ZIP code 53213, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=591CK
- Page: https://openairdocs.org/aircraft/N591CK

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 Continental OX-340 model are included.

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

### Matched by airframe (William N Wirth AL18)

None in force.

### Matched by engine (Continental OX-340 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N591CK.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 20250617007439I](https://openairdocs.org/incident/20250617007439I), Jun 17, 2025: William N Wirth AL18 (N591CK), Milwaukee, WI, Minor damage. On June 17, 2025, 1847Z / 1347 CDT at Lawrence j. Timmerman airport (kmwc), WI an American legend AL18 “super legend cub” operated by the solo occupant, who is…

## 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 William N Wirth AL18 aircraft: https://openairdocs.org/model/william-n-wirth-al18/aircraft.md
- The Continental OX-340 series engine: https://openairdocs.org/engine/continental-ox-340-series.md

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