| Tail Number / N-Number | N54SZ |
| Manufacturer | SZIGAT JOHN H |
| Model | CHALLENGER SZIGAT |
| Year Built | 2005 |
| Manufacturer's Serial Number | 2593 |
| 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 | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Kit Manufacturer | QUAD CITY ULTRALIGHT ACFT CORP |
| Kit Model | CHALLENGER II |
| Type of Registrant | Individual |
| Owner Name | SZIGAT JOHN H |
| Street | W11200 HORSESHOE BEND RD |
| City | DEERBROOK |
| State | WI |
| Zip Code | 54424-9247 |
| Region | Great Lakes |
| County | Langlade County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2005-12-26 |
| Certificate Issue Date | 2005-08-08 |
| Last Action Date | 2021-01-02 |
| Expiration Date | 2028-03-31 |
| Status | Valid Registration |
| Mode S Code | 51553473 |
| Mode S Code Hex | A6D73B |