| Tail Number / N-Number | N591CK |
| Manufacturer | WILLIAM N WIRTH |
| Model | AL18 |
| Year Built | 2021 |
| Manufacturer's Serial Number | AL-347 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | OX-340 SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Kit Manufacturer | AMERICAN LEGEND AIRCRAFT CO |
| Kit Model | AL18 |
| Type of Registrant | Individual |
| Owner Name | WIRTH WILLIAM N |
| Street | 1741 ALTA VISTA AVE |
| City | WAUWATOSA |
| State | WI |
| Zip Code | 53213-2319 |
| Region | Great Lakes |
| County | Milwaukee County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2021-04-08 |
| Certificate Issue Date | 2021-04-01 |
| Last Action Date | 2021-04-01 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 51720532 |
| Mode S Code Hex | A7A15A |